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Text I
Brazil: Platform for growth
By Joe Leahy
On the Cidade de Angra dos Reis oil platform,
surrounded by the deep blue South Atlantic, a
Petrobras engineer turns on a tap and watches black
liquid flow into a beaker.
5____It looks and smells like ordinary crude oil.
Nevertheless, for Brazil, this represents something
much more spectacular. Pumped by the national oil
company from “pre-salt” deposits – so-called because
they lie beneath 2,000m of salt – 300km off the coast
10 of Rio de Janeiro, it is some of the first commercial
oil to flow from the country’s giant new deepwater
discoveries.
Already estimated to contain 50bn barrels, and
with much of the area still to be fully explored, the
15 fields contain the world’s largest known offshore oil
deposits. In one step, Brazil could jump up the world
rankings of national oil reserves and production, from
15th to fifth. So great are the discoveries, and the
investment required to exploit them, that they have
20 the potential to transform the country – for good or for ill.
Having seen out booms and busts before,
Brazilians are hoping that this time “the country
of the future” will at last realise its full economic
potential. The hope is that the discoveries will provide
25 a nation already rich in renewable energy with an
embarrassment of resources with which to pursue the
goal of becoming a US of the south.
The danger for Brazil, if it fails to manage this
windfall wisely, is of falling victim to “Dutch disease”.
30 The economic malaise is named after the Netherlands
in the 1970s, where the manufacturing sector withered
after its currency strengthened on the back of a large
gas field discovery combined with rising energy prices.
Even worse, Brazil could suffer a more severe
35 form of the disease, the “oil curse”, whereby nations
rich in natural resources – Nigeria and Venezuela, for
example – grow addicted to the money that flows from
them.
Petrobras chief executive says neither the
40 company nor the country’s oil industry has so far
been big enough to become a government cash cow.
But with the new discoveries, which stretch across an
800km belt off the coast of south-eastern Brazil, this is
going to change. The oil industry could grow from about
45 10 per cent of GDP to up to 25 per cent in the coming
decades, analysts say. To curb any negative effects,
Brazil is trying to support domestic manufacturing
by increasing “local content” requirements in the oil
industry.
50____Without a “firm local content policy”, says
Petrobras CEO, Dutch disease and the oil curse will
take hold. However, “if we have a firm and successful
local content policy, no – because other sectors in the
economy are going to grow as fast as Petrobras”.
55___The other long-term dividend Brazil is seeking
from the discoveries is in research and development
(R&D). Extracting oil from beneath a layer of salt at
great depth, hundreds of kilometres from the coast, is
so challenging that Brazilian engineers see it as a new
60 frontier. If they can perfect this, they can lead the way
in other markets with similar geology, such as Africa.
For its part, Petrobras is spending $800m-$900m
a year over the next five years on R&D, and has
invested $700m in the expansion of its research
65 centre.
Ultimately, Brazil’s ability to avoid Dutch disease
will depend not just on how the money from the oil
is spent. The country is the world’s second biggest
exporter of iron ore. It is the largest exporter of beef.
70 It is also the biggest producer of sugar, coffee and
orange juice, and the second-largest producer of soya
beans.
Exports of these commodities are already driving
up the exchange rate before the new oil fields have
75 fully come on stream, making it harder for Brazilian
exporters of manufactured goods. Industrial production
has faltered in recent months, with manufacturers
blaming the trend on a flood of cheap Chinese-made
imports.
80____“Brazil has everything that China doesn’t and it’s
natural that, as China continues to grow, it’s just going
to be starved for those resources,” says Harvard’s
Prof Rogoff. “At some level Brazil doesn’t just want
to be exporting natural resources – it wants a more
85 diversified economy. There are going to be some
rising tensions over that.”
Adapted from Financial Times - March 15 2011 22:54. Available in:
<http://www.ft.com/cms/s/0/fa11320c-4f48-11e0-9038-00144feab49a,_i_email=y.html>
Retrieved on: June 17, 2011.
The boldfaced item is synonymous with the expression in parentheses in
Text I
Brazil: Platform for growth
By Joe Leahy
On the Cidade de Angra dos Reis oil platform,
surrounded by the deep blue South Atlantic, a
Petrobras engineer turns on a tap and watches black
liquid flow into a beaker.
5____It looks and smells like ordinary crude oil.
Nevertheless, for Brazil, this represents something
much more spectacular. Pumped by the national oil
company from “pre-salt” deposits – so-called because
they lie beneath 2,000m of salt – 300km off the coast
10 of Rio de Janeiro, it is some of the first commercial
oil to flow from the country’s giant new deepwater
discoveries.
Already estimated to contain 50bn barrels, and
with much of the area still to be fully explored, the
15 fields contain the world’s largest known offshore oil
deposits. In one step, Brazil could jump up the world
rankings of national oil reserves and production, from
15th to fifth. So great are the discoveries, and the
investment required to exploit them, that they have
20 the potential to transform the country – for good or for ill.
Having seen out booms and busts before,
Brazilians are hoping that this time “the country
of the future” will at last realise its full economic
potential. The hope is that the discoveries will provide
25 a nation already rich in renewable energy with an
embarrassment of resources with which to pursue the
goal of becoming a US of the south.
The danger for Brazil, if it fails to manage this
windfall wisely, is of falling victim to “Dutch disease”.
30 The economic malaise is named after the Netherlands
in the 1970s, where the manufacturing sector withered
after its currency strengthened on the back of a large
gas field discovery combined with rising energy prices.
Even worse, Brazil could suffer a more severe
35 form of the disease, the “oil curse”, whereby nations
rich in natural resources – Nigeria and Venezuela, for
example – grow addicted to the money that flows from
them.
Petrobras chief executive says neither the
40 company nor the country’s oil industry has so far
been big enough to become a government cash cow.
But with the new discoveries, which stretch across an
800km belt off the coast of south-eastern Brazil, this is
going to change. The oil industry could grow from about
45 10 per cent of GDP to up to 25 per cent in the coming
decades, analysts say. To curb any negative effects,
Brazil is trying to support domestic manufacturing
by increasing “local content” requirements in the oil
industry.
50____Without a “firm local content policy”, says
Petrobras CEO, Dutch disease and the oil curse will
take hold. However, “if we have a firm and successful
local content policy, no – because other sectors in the
economy are going to grow as fast as Petrobras”.
55___The other long-term dividend Brazil is seeking
from the discoveries is in research and development
(R&D). Extracting oil from beneath a layer of salt at
great depth, hundreds of kilometres from the coast, is
so challenging that Brazilian engineers see it as a new
60 frontier. If they can perfect this, they can lead the way
in other markets with similar geology, such as Africa.
For its part, Petrobras is spending $800m-$900m
a year over the next five years on R&D, and has
invested $700m in the expansion of its research
65 centre.
Ultimately, Brazil’s ability to avoid Dutch disease
will depend not just on how the money from the oil
is spent. The country is the world’s second biggest
exporter of iron ore. It is the largest exporter of beef.
70 It is also the biggest producer of sugar, coffee and
orange juice, and the second-largest producer of soya
beans.
Exports of these commodities are already driving
up the exchange rate before the new oil fields have
75 fully come on stream, making it harder for Brazilian
exporters of manufactured goods. Industrial production
has faltered in recent months, with manufacturers
blaming the trend on a flood of cheap Chinese-made
imports.
80____“Brazil has everything that China doesn’t and it’s
natural that, as China continues to grow, it’s just going
to be starved for those resources,” says Harvard’s
Prof Rogoff. “At some level Brazil doesn’t just want
to be exporting natural resources – it wants a more
85 diversified economy. There are going to be some
rising tensions over that.”
Adapted from Financial Times - March 15 2011 22:54. Available in:
<http://www.ft.com/cms/s/0/fa11320c-4f48-11e0-9038-00144feab49a,_i_email=y.html>
Retrieved on: June 17, 2011.
In “Without a ‘firm local content policy’, says Petrobras CEO, Dutch disease and the oil curse will take hold.” (lines 50-52), “take hold” means to
Text I
Brazil: Platform for growth
By Joe Leahy
On the Cidade de Angra dos Reis oil platform,
surrounded by the deep blue South Atlantic, a
Petrobras engineer turns on a tap and watches black
liquid flow into a beaker.
5____It looks and smells like ordinary crude oil.
Nevertheless, for Brazil, this represents something
much more spectacular. Pumped by the national oil
company from “pre-salt” deposits – so-called because
they lie beneath 2,000m of salt – 300km off the coast
10 of Rio de Janeiro, it is some of the first commercial
oil to flow from the country’s giant new deepwater
discoveries.
Already estimated to contain 50bn barrels, and
with much of the area still to be fully explored, the
15 fields contain the world’s largest known offshore oil
deposits. In one step, Brazil could jump up the world
rankings of national oil reserves and production, from
15th to fifth. So great are the discoveries, and the
investment required to exploit them, that they have
20 the potential to transform the country – for good or for ill.
Having seen out booms and busts before,
Brazilians are hoping that this time “the country
of the future” will at last realise its full economic
potential. The hope is that the discoveries will provide
25 a nation already rich in renewable energy with an
embarrassment of resources with which to pursue the
goal of becoming a US of the south.
The danger for Brazil, if it fails to manage this
windfall wisely, is of falling victim to “Dutch disease”.
30 The economic malaise is named after the Netherlands
in the 1970s, where the manufacturing sector withered
after its currency strengthened on the back of a large
gas field discovery combined with rising energy prices.
Even worse, Brazil could suffer a more severe
35 form of the disease, the “oil curse”, whereby nations
rich in natural resources – Nigeria and Venezuela, for
example – grow addicted to the money that flows from
them.
Petrobras chief executive says neither the
40 company nor the country’s oil industry has so far
been big enough to become a government cash cow.
But with the new discoveries, which stretch across an
800km belt off the coast of south-eastern Brazil, this is
going to change. The oil industry could grow from about
45 10 per cent of GDP to up to 25 per cent in the coming
decades, analysts say. To curb any negative effects,
Brazil is trying to support domestic manufacturing
by increasing “local content” requirements in the oil
industry.
50____Without a “firm local content policy”, says
Petrobras CEO, Dutch disease and the oil curse will
take hold. However, “if we have a firm and successful
local content policy, no – because other sectors in the
economy are going to grow as fast as Petrobras”.
55___The other long-term dividend Brazil is seeking
from the discoveries is in research and development
(R&D). Extracting oil from beneath a layer of salt at
great depth, hundreds of kilometres from the coast, is
so challenging that Brazilian engineers see it as a new
60 frontier. If they can perfect this, they can lead the way
in other markets with similar geology, such as Africa.
For its part, Petrobras is spending $800m-$900m
a year over the next five years on R&D, and has
invested $700m in the expansion of its research
65 centre.
Ultimately, Brazil’s ability to avoid Dutch disease
will depend not just on how the money from the oil
is spent. The country is the world’s second biggest
exporter of iron ore. It is the largest exporter of beef.
70 It is also the biggest producer of sugar, coffee and
orange juice, and the second-largest producer of soya
beans.
Exports of these commodities are already driving
up the exchange rate before the new oil fields have
75 fully come on stream, making it harder for Brazilian
exporters of manufactured goods. Industrial production
has faltered in recent months, with manufacturers
blaming the trend on a flood of cheap Chinese-made
imports.
80____“Brazil has everything that China doesn’t and it’s
natural that, as China continues to grow, it’s just going
to be starved for those resources,” says Harvard’s
Prof Rogoff. “At some level Brazil doesn’t just want
to be exporting natural resources – it wants a more
85 diversified economy. There are going to be some
rising tensions over that.”
Adapted from Financial Times - March 15 2011 22:54. Available in:
<http://www.ft.com/cms/s/0/fa11320c-4f48-11e0-9038-00144feab49a,_i_email=y.html>
Retrieved on: June 17, 2011.
Concerning the referent to the pronoun it, in the fragments below,
Text I
Brazil: Platform for growth
By Joe Leahy
On the Cidade de Angra dos Reis oil platform,
surrounded by the deep blue South Atlantic, a
Petrobras engineer turns on a tap and watches black
liquid flow into a beaker.
5____It looks and smells like ordinary crude oil.
Nevertheless, for Brazil, this represents something
much more spectacular. Pumped by the national oil
company from “pre-salt” deposits – so-called because
they lie beneath 2,000m of salt – 300km off the coast
10 of Rio de Janeiro, it is some of the first commercial
oil to flow from the country’s giant new deepwater
discoveries.
Already estimated to contain 50bn barrels, and
with much of the area still to be fully explored, the
15 fields contain the world’s largest known offshore oil
deposits. In one step, Brazil could jump up the world
rankings of national oil reserves and production, from
15th to fifth. So great are the discoveries, and the
investment required to exploit them, that they have
20 the potential to transform the country – for good or for ill.
Having seen out booms and busts before,
Brazilians are hoping that this time “the country
of the future” will at last realise its full economic
potential. The hope is that the discoveries will provide
25 a nation already rich in renewable energy with an
embarrassment of resources with which to pursue the
goal of becoming a US of the south.
The danger for Brazil, if it fails to manage this
windfall wisely, is of falling victim to “Dutch disease”.
30 The economic malaise is named after the Netherlands
in the 1970s, where the manufacturing sector withered
after its currency strengthened on the back of a large
gas field discovery combined with rising energy prices.
Even worse, Brazil could suffer a more severe
35 form of the disease, the “oil curse”, whereby nations
rich in natural resources – Nigeria and Venezuela, for
example – grow addicted to the money that flows from
them.
Petrobras chief executive says neither the
40 company nor the country’s oil industry has so far
been big enough to become a government cash cow.
But with the new discoveries, which stretch across an
800km belt off the coast of south-eastern Brazil, this is
going to change. The oil industry could grow from about
45 10 per cent of GDP to up to 25 per cent in the coming
decades, analysts say. To curb any negative effects,
Brazil is trying to support domestic manufacturing
by increasing “local content” requirements in the oil
industry.
50____Without a “firm local content policy”, says
Petrobras CEO, Dutch disease and the oil curse will
take hold. However, “if we have a firm and successful
local content policy, no – because other sectors in the
economy are going to grow as fast as Petrobras”.
55___The other long-term dividend Brazil is seeking
from the discoveries is in research and development
(R&D). Extracting oil from beneath a layer of salt at
great depth, hundreds of kilometres from the coast, is
so challenging that Brazilian engineers see it as a new
60 frontier. If they can perfect this, they can lead the way
in other markets with similar geology, such as Africa.
For its part, Petrobras is spending $800m-$900m
a year over the next five years on R&D, and has
invested $700m in the expansion of its research
65 centre.
Ultimately, Brazil’s ability to avoid Dutch disease
will depend not just on how the money from the oil
is spent. The country is the world’s second biggest
exporter of iron ore. It is the largest exporter of beef.
70 It is also the biggest producer of sugar, coffee and
orange juice, and the second-largest producer of soya
beans.
Exports of these commodities are already driving
up the exchange rate before the new oil fields have
75 fully come on stream, making it harder for Brazilian
exporters of manufactured goods. Industrial production
has faltered in recent months, with manufacturers
blaming the trend on a flood of cheap Chinese-made
imports.
80____“Brazil has everything that China doesn’t and it’s
natural that, as China continues to grow, it’s just going
to be starved for those resources,” says Harvard’s
Prof Rogoff. “At some level Brazil doesn’t just want
to be exporting natural resources – it wants a more
85 diversified economy. There are going to be some
rising tensions over that.”
Adapted from Financial Times - March 15 2011 22:54. Available in:
<http://www.ft.com/cms/s/0/fa11320c-4f48-11e0-9038-00144feab49a,_i_email=y.html>
Retrieved on: June 17, 2011.
According to paragraphs 9 and 10 (lines 55-65), investing in R&D
Text I
Brazil: Platform for growth
By Joe Leahy
On the Cidade de Angra dos Reis oil platform,
surrounded by the deep blue South Atlantic, a
Petrobras engineer turns on a tap and watches black
liquid flow into a beaker.
5____It looks and smells like ordinary crude oil.
Nevertheless, for Brazil, this represents something
much more spectacular. Pumped by the national oil
company from “pre-salt” deposits – so-called because
they lie beneath 2,000m of salt – 300km off the coast
10 of Rio de Janeiro, it is some of the first commercial
oil to flow from the country’s giant new deepwater
discoveries.
Already estimated to contain 50bn barrels, and
with much of the area still to be fully explored, the
15 fields contain the world’s largest known offshore oil
deposits. In one step, Brazil could jump up the world
rankings of national oil reserves and production, from
15th to fifth. So great are the discoveries, and the
investment required to exploit them, that they have
20 the potential to transform the country – for good or for ill.
Having seen out booms and busts before,
Brazilians are hoping that this time “the country
of the future” will at last realise its full economic
potential. The hope is that the discoveries will provide
25 a nation already rich in renewable energy with an
embarrassment of resources with which to pursue the
goal of becoming a US of the south.
The danger for Brazil, if it fails to manage this
windfall wisely, is of falling victim to “Dutch disease”.
30 The economic malaise is named after the Netherlands
in the 1970s, where the manufacturing sector withered
after its currency strengthened on the back of a large
gas field discovery combined with rising energy prices.
Even worse, Brazil could suffer a more severe
35 form of the disease, the “oil curse”, whereby nations
rich in natural resources – Nigeria and Venezuela, for
example – grow addicted to the money that flows from
them.
Petrobras chief executive says neither the
40 company nor the country’s oil industry has so far
been big enough to become a government cash cow.
But with the new discoveries, which stretch across an
800km belt off the coast of south-eastern Brazil, this is
going to change. The oil industry could grow from about
45 10 per cent of GDP to up to 25 per cent in the coming
decades, analysts say. To curb any negative effects,
Brazil is trying to support domestic manufacturing
by increasing “local content” requirements in the oil
industry.
50____Without a “firm local content policy”, says
Petrobras CEO, Dutch disease and the oil curse will
take hold. However, “if we have a firm and successful
local content policy, no – because other sectors in the
economy are going to grow as fast as Petrobras”.
55___The other long-term dividend Brazil is seeking
from the discoveries is in research and development
(R&D). Extracting oil from beneath a layer of salt at
great depth, hundreds of kilometres from the coast, is
so challenging that Brazilian engineers see it as a new
60 frontier. If they can perfect this, they can lead the way
in other markets with similar geology, such as Africa.
For its part, Petrobras is spending $800m-$900m
a year over the next five years on R&D, and has
invested $700m in the expansion of its research
65 centre.
Ultimately, Brazil’s ability to avoid Dutch disease
will depend not just on how the money from the oil
is spent. The country is the world’s second biggest
exporter of iron ore. It is the largest exporter of beef.
70 It is also the biggest producer of sugar, coffee and
orange juice, and the second-largest producer of soya
beans.
Exports of these commodities are already driving
up the exchange rate before the new oil fields have
75 fully come on stream, making it harder for Brazilian
exporters of manufactured goods. Industrial production
has faltered in recent months, with manufacturers
blaming the trend on a flood of cheap Chinese-made
imports.
80____“Brazil has everything that China doesn’t and it’s
natural that, as China continues to grow, it’s just going
to be starved for those resources,” says Harvard’s
Prof Rogoff. “At some level Brazil doesn’t just want
to be exporting natural resources – it wants a more
85 diversified economy. There are going to be some
rising tensions over that.”
Adapted from Financial Times - March 15 2011 22:54. Available in:
<http://www.ft.com/cms/s/0/fa11320c-4f48-11e0-9038-00144feab49a,_i_email=y.html>
Retrieved on: June 17, 2011.
According to paragraphs 5 and 6 (lines 28-38), Dutch disease is a
Text I
Brazil: Platform for growth
By Joe Leahy
On the Cidade de Angra dos Reis oil platform,
surrounded by the deep blue South Atlantic, a
Petrobras engineer turns on a tap and watches black
liquid flow into a beaker.
5____It looks and smells like ordinary crude oil.
Nevertheless, for Brazil, this represents something
much more spectacular. Pumped by the national oil
company from “pre-salt” deposits – so-called because
they lie beneath 2,000m of salt – 300km off the coast
10 of Rio de Janeiro, it is some of the first commercial
oil to flow from the country’s giant new deepwater
discoveries.
Already estimated to contain 50bn barrels, and
with much of the area still to be fully explored, the
15 fields contain the world’s largest known offshore oil
deposits. In one step, Brazil could jump up the world
rankings of national oil reserves and production, from
15th to fifth. So great are the discoveries, and the
investment required to exploit them, that they have
20 the potential to transform the country – for good or for ill.
Having seen out booms and busts before,
Brazilians are hoping that this time “the country
of the future” will at last realise its full economic
potential. The hope is that the discoveries will provide
25 a nation already rich in renewable energy with an
embarrassment of resources with which to pursue the
goal of becoming a US of the south.
The danger for Brazil, if it fails to manage this
windfall wisely, is of falling victim to “Dutch disease”.
30 The economic malaise is named after the Netherlands
in the 1970s, where the manufacturing sector withered
after its currency strengthened on the back of a large
gas field discovery combined with rising energy prices.
Even worse, Brazil could suffer a more severe
35 form of the disease, the “oil curse”, whereby nations
rich in natural resources – Nigeria and Venezuela, for
example – grow addicted to the money that flows from
them.
Petrobras chief executive says neither the
40 company nor the country’s oil industry has so far
been big enough to become a government cash cow.
But with the new discoveries, which stretch across an
800km belt off the coast of south-eastern Brazil, this is
going to change. The oil industry could grow from about
45 10 per cent of GDP to up to 25 per cent in the coming
decades, analysts say. To curb any negative effects,
Brazil is trying to support domestic manufacturing
by increasing “local content” requirements in the oil
industry.
50____Without a “firm local content policy”, says
Petrobras CEO, Dutch disease and the oil curse will
take hold. However, “if we have a firm and successful
local content policy, no – because other sectors in the
economy are going to grow as fast as Petrobras”.
55___The other long-term dividend Brazil is seeking
from the discoveries is in research and development
(R&D). Extracting oil from beneath a layer of salt at
great depth, hundreds of kilometres from the coast, is
so challenging that Brazilian engineers see it as a new
60 frontier. If they can perfect this, they can lead the way
in other markets with similar geology, such as Africa.
For its part, Petrobras is spending $800m-$900m
a year over the next five years on R&D, and has
invested $700m in the expansion of its research
65 centre.
Ultimately, Brazil’s ability to avoid Dutch disease
will depend not just on how the money from the oil
is spent. The country is the world’s second biggest
exporter of iron ore. It is the largest exporter of beef.
70 It is also the biggest producer of sugar, coffee and
orange juice, and the second-largest producer of soya
beans.
Exports of these commodities are already driving
up the exchange rate before the new oil fields have
75 fully come on stream, making it harder for Brazilian
exporters of manufactured goods. Industrial production
has faltered in recent months, with manufacturers
blaming the trend on a flood of cheap Chinese-made
imports.
80____“Brazil has everything that China doesn’t and it’s
natural that, as China continues to grow, it’s just going
to be starved for those resources,” says Harvard’s
Prof Rogoff. “At some level Brazil doesn’t just want
to be exporting natural resources – it wants a more
85 diversified economy. There are going to be some
rising tensions over that.”
Adapted from Financial Times - March 15 2011 22:54. Available in:
<http://www.ft.com/cms/s/0/fa11320c-4f48-11e0-9038-00144feab49a,_i_email=y.html>
Retrieved on: June 17, 2011.
The communicative intention of Text I is to
Texto para a questão.
Sejam X e Y variáveis aleatórias contínuas que possuam uma distribuição conjunta dada por
Texto para a questão.
Sejam X e Y variáveis aleatórias contínuas que possuam uma distribuição conjunta dada por
Fração amostral e número de municípios, segundo as classes de tamanho da população dos municípios
Considerando que a população dos 40 maiores municípios é estimada em, aproximadamente, 57 milhões de habitantes e que o número de habitantes por domicílios é uniforme para todas as classes de tamanho da população dos municípios, analise.
I. A classe de tamanho da população de “mais de 500.000” representa a classe com maior quantidade de habitantes estimados no Brasil.
II. A classe do tamanho da população de “até 2.500” representa mais de 4% do número de municípios e menos de 0,4% de habitantes do Brasil.
III. A classe do tamanho da população de “mais de 20.000 até 500.000” representa a classe com estimativa de maior quantidade de habitantes amostrados no Brasil.
IV. A classe do tamanho de população de “até 500.000” representa menos de 15% dos habitantes possivelmente amostrados no Brasil.
Estão corretas apenas as afirmativas
M(t) = et²-2 para - ∞ < t < ∞
Com base nestas informações, encontre a F.G.M. de uma variável Z = 2 . X – Y + 3.
I. Dado que o candidato não saiba a resposta de uma determinada questão, a probabilidade dele acertá-la é de 20%.
II. A probabilidade de o candidato acertar uma questão selecionada de forma aleatória é de 80%.
III. Dado que o candidato acertou uma determinada questão, a probabilidade de ele saber realmente a resposta é de mais de 90%.
IV. Para este teste, o candidato só é aprovado se acertar pelo menos 9 das 10 questões. Caso o candidato seja aprovado, a chance dele tirar um 9 é 2,5 vezes maior que tirar um 10.
Estão corretas apenas as afirmativas
I. O Erro Quadrático Médio do estimador T2 é igual ao módulo do viés de T1. II. As variâncias de T1 e T2 são iguais aos seus respectivos Erros Quadráticos Médios. III. O Erro Quadrático Médio de T1 é igual ao Erro Quadrático Médio de T2. IV. O estimador T1 apresenta maior eficiência em relação a T2.
Estão corretas apenas as afirmativas
( ) T1 e T2 são estimadores assintoticamente não-viesados para estimar o parâmetro θ. ( ) T1 apresenta menor variância que T2 na estimação do parâmetro θ. ( ) O módulo do viés do estimador T1 é maior que o modulo do viés do estimador T2. ( ) A razão da variância do estimador pela variância do estimador determina a eficiência relativa dos dois estimadores.
A sequência está correta em
Considere que o PIB seja a soma dos 4 componentes e a covariância de cada componente com o PIB é apresentada na seguinte ordenação
Conheça nossos planos