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Q1003144 Estatística

Sobre os pressupostos da ANOVA, analise as proposições abaixo e, em seguida, assinale a alternativa que apresenta a resposta correta.


I. As observações são independentes entre os grupos mas não necessariamente dentro dos grupos.

II. A distribuição dos resíduos é normal.

III. Os grupos comparados apresentam a mesma variabilidade residual.

IV. A variabilidade das observações dentro dos grupos é menor que a variabilidade entre os grupos.

Alternativas
Q1003143 Estatística
Assinale a alternativa correta sobre o que se obtém em testes de hipótese, dada as definições de erro tipo I e erro tipo II.
Alternativas
Q1003142 Estatística
Suponha uma amostra, Xi, ..., Xn„, independente e identicamente distribuída, oriunda de uma distribuição de Poisson com parâmetro λ. É de interesse testar a hipótese nula de que λ = 10 contra a hipótese alternativa de λ = 8, com um nível de significância α e tamanho amostral grande. O poder deste teste é a probabilidade de qual dos eventos abaixo ocorrer, dado que a hipótese nula é falsa e sendo Z uma variável aleatória que tem distribuição normal padrão?
Alternativas
Q1003141 Estatística
Assinale a alternativa correta sobre o intervalo de 95% de confiança para a média populacional levando em consideração uma amostra de 100 observações, com desvio padrão populacional 20 e média amostral 8.
Alternativas
Q1003140 Estatística

Analise as afirmativas considerando as propriedades dos estimadores, colocando entre parênteses a letra “V”, quando se tratar de afirmativa verdadeira, e a letra “F” quando se tratar de afirmativa falsa. A seguir, assinale a alternativa que apresenta a sequência correta. 


( ) Um estimador preciso tem um erro quadrático médio pequeno, portanto uma variância também pequena.

( ) O estimador T1 é dito ser mais eficiente que T2 se a variância de T1 for menor que a variância de T2, quaisquer que sejam as suas esperanças.

( ) Um estimador para ser consistente tem que ser assintoticamente não-viesado e sua variância tender para zero quando o tamanho da amostra tender para o infinito.

Alternativas
Q1003139 Estatística

Analise as afirmativas sobre a representação gráfica de variáveis, colocando entre parênteses a letra “V”, quando se tratar de afirmativa verdadeira, e a letra “F” quando se tratar de afirmativa falsa. A seguir, assinale a alternativa que apresenta a sequência correta.


( ) O gráfico boxplot exibe graficamente apenas os quartis; respectivamente o primeiro quartil, mediana e terceiro quartil.

( ) O histograma é um gráfico de barras contíguas utilizado para representar variáveis contínuas.

( ) O gráfico de barras, ou colunas, é utilizado para expressar variáveis qualitativas nominais ou ordinais. Uma alternativa ao seu uso é o gráfico de setores circulares.

Alternativas
Q1003138 Estatística
Indique qual dos exemplos abaixo NÃO É um exemplo de uma variável aleatória contínua.
Alternativas
Q1003137 Estatística
O peso de um componente é produzido sobre um valor nominal de 80kg e uma variação em desvio padrão de 2kg. Supondo X a variável aleatória que indica o peso e assumindo normalidade para esta variável, considere as probabilidades p1 = P(X > 80), p2 = P(X > 84) e ), p3 = P(X < 74). Deste modo, podemos afirmar que:
Alternativas
Q1003136 Estatística
Suponha que a v.a. Y tenha distribuição binomial com parâmetros n = 10 e p = 0,5. A probabilidade de P(Y ≤ 5) é de:
Alternativas
Q1003135 Estatística
Para a fabricação de lápis, uma indústria deve escolher um entre quatro tipos de grafite (A, B, C e D) e um entre três tipos de madeira (M1, M2 e M3). Para essas opções, quantos são os possíveis tipos de lápis a serem produzidos? 
Alternativas
Q1003134 Estatística

Seja o índice agregativo simples entre os períodos 0 e 1 definido por Imagem associada para resolução da questão sendo Imagem associada para resolução da questão os preços do produto i (i = 1 ,..., n) para os respectivos períodos. Através da Tabela abaixo, podemos afirmar que


Imagem associada para resolução da questão

Alternativas
Q1003133 Estatística
Seja X uma variável aleatória contínua com função de densidade de probabilidade dada por:

Imagem associada para resolução da questão
Qual o valor de c de modo que P(X >c) = 0,8?
Alternativas
Q978270 Inglês

                                                 Texto 4


      FRANK WHITTLE AND THE INVENTION OF THE JET ENGINE:

                            SIX PLACES TO TRACE HIS GENIUS


      It was, in many ways, a very British sort of achievement. When the turbine began to spin on the “WU” – the prototype jet engine developed by the Coventry-born engineer Frank Whittle – it was a moment which changed the world. Had you been passing through the byways of Rugby, in Warwickshire, more than 80 years ago, you might even have heard it. A thrum of mechanics in sync, building and building, growing in intensity to become a roar; a giddy howl which would permanently alter the way we journey around our planet.

      And yet it might so easily not have happened. Whittle’s triumph – on April 12, 1937 – was garnered in the face of official indifference and scientific doubt, and was only pulled off by a merest financial hair’s breadth, with the Second World War crowding in on all sides.

                                             ( . . . )

       Here was a visionary who began fomenting his design for a jet engine as early as 1927, and patented it in 1930, yet had to swim against the current after seeing his idea pooh-poohed by the UK's Air Ministry – which, upon seeing the blueprint in 1929, deemed it “impracticable.”

      Undeterred, Whittle took his own path. In January 1936, he founded a private company, Power Jets Ltd, with aeronautical engineer Rolf Dudley Williams and retired RAF officer James Collingwood Tinling. With £2,000 of funding from O.T. Falk & Partners – an investment bank which was known for taking risks – the trio began converting what had been decried as fantasy into reality. That first blur of blades as the WU (Whittle Unit) screamed into life was followed by a series of leaps forward.

      The Air Ministry placed its first order for Whittle’s brainwave in January 1940. The first jet-powered British plane took off from RAF Cranwell, Lincolnshire, on May 15, 1941. The rest is so much history.

      None of this occurred in isolation. The story of the jet engine can never be told without mentions of Maxime Guillaume, who secured a French patent for a jet engine with a gas turbine in 1921 (no prototype was ever produced as it was beyond the scope of existing technology), and of Hans Von Ohain, who beat Whittle to the punch by building the first fully operational jet engine in 1939 as Germany chased advantages in the global conflict.

                                               ( . . . )
  

RAF = Royal Air Force

LEADBEATER, C. Adaptado de Frank Whittle and the invention of the jet engine: Six places to trace his genius. In: The Telegraph. Disponível em: <https://www.telegraph.co.uk/travel/destinations/europe/unitedkingdom/england/articles/frank-whittle-and-the-birth-of-the-jet-engine/>. Acesso em: 08/06/2018


Choose the correct option.
Alternativas
Q978269 Inglês

                                                 Texto 4


      FRANK WHITTLE AND THE INVENTION OF THE JET ENGINE:

                            SIX PLACES TO TRACE HIS GENIUS


      It was, in many ways, a very British sort of achievement. When the turbine began to spin on the “WU” – the prototype jet engine developed by the Coventry-born engineer Frank Whittle – it was a moment which changed the world. Had you been passing through the byways of Rugby, in Warwickshire, more than 80 years ago, you might even have heard it. A thrum of mechanics in sync, building and building, growing in intensity to become a roar; a giddy howl which would permanently alter the way we journey around our planet.

      And yet it might so easily not have happened. Whittle’s triumph – on April 12, 1937 – was garnered in the face of official indifference and scientific doubt, and was only pulled off by a merest financial hair’s breadth, with the Second World War crowding in on all sides.

                                             ( . . . )

       Here was a visionary who began fomenting his design for a jet engine as early as 1927, and patented it in 1930, yet had to swim against the current after seeing his idea pooh-poohed by the UK's Air Ministry – which, upon seeing the blueprint in 1929, deemed it “impracticable.”

      Undeterred, Whittle took his own path. In January 1936, he founded a private company, Power Jets Ltd, with aeronautical engineer Rolf Dudley Williams and retired RAF officer James Collingwood Tinling. With £2,000 of funding from O.T. Falk & Partners – an investment bank which was known for taking risks – the trio began converting what had been decried as fantasy into reality. That first blur of blades as the WU (Whittle Unit) screamed into life was followed by a series of leaps forward.

      The Air Ministry placed its first order for Whittle’s brainwave in January 1940. The first jet-powered British plane took off from RAF Cranwell, Lincolnshire, on May 15, 1941. The rest is so much history.

      None of this occurred in isolation. The story of the jet engine can never be told without mentions of Maxime Guillaume, who secured a French patent for a jet engine with a gas turbine in 1921 (no prototype was ever produced as it was beyond the scope of existing technology), and of Hans Von Ohain, who beat Whittle to the punch by building the first fully operational jet engine in 1939 as Germany chased advantages in the global conflict.

                                               ( . . . )
  

RAF = Royal Air Force

LEADBEATER, C. Adaptado de Frank Whittle and the invention of the jet engine: Six places to trace his genius. In: The Telegraph. Disponível em: <https://www.telegraph.co.uk/travel/destinations/europe/unitedkingdom/england/articles/frank-whittle-and-the-birth-of-the-jet-engine/>. Acesso em: 08/06/2018


Choose the correct option.


The sentence: “That first blur of blades as the WU (Whittle Unit) screamed into life was followed by a series of leaps forward” means that

Alternativas
Q978268 Inglês

                                                 Texto 4


      FRANK WHITTLE AND THE INVENTION OF THE JET ENGINE:

                            SIX PLACES TO TRACE HIS GENIUS


      It was, in many ways, a very British sort of achievement. When the turbine began to spin on the “WU” – the prototype jet engine developed by the Coventry-born engineer Frank Whittle – it was a moment which changed the world. Had you been passing through the byways of Rugby, in Warwickshire, more than 80 years ago, you might even have heard it. A thrum of mechanics in sync, building and building, growing in intensity to become a roar; a giddy howl which would permanently alter the way we journey around our planet.

      And yet it might so easily not have happened. Whittle’s triumph – on April 12, 1937 – was garnered in the face of official indifference and scientific doubt, and was only pulled off by a merest financial hair’s breadth, with the Second World War crowding in on all sides.

                                             ( . . . )

       Here was a visionary who began fomenting his design for a jet engine as early as 1927, and patented it in 1930, yet had to swim against the current after seeing his idea pooh-poohed by the UK's Air Ministry – which, upon seeing the blueprint in 1929, deemed it “impracticable.”

      Undeterred, Whittle took his own path. In January 1936, he founded a private company, Power Jets Ltd, with aeronautical engineer Rolf Dudley Williams and retired RAF officer James Collingwood Tinling. With £2,000 of funding from O.T. Falk & Partners – an investment bank which was known for taking risks – the trio began converting what had been decried as fantasy into reality. That first blur of blades as the WU (Whittle Unit) screamed into life was followed by a series of leaps forward.

      The Air Ministry placed its first order for Whittle’s brainwave in January 1940. The first jet-powered British plane took off from RAF Cranwell, Lincolnshire, on May 15, 1941. The rest is so much history.

      None of this occurred in isolation. The story of the jet engine can never be told without mentions of Maxime Guillaume, who secured a French patent for a jet engine with a gas turbine in 1921 (no prototype was ever produced as it was beyond the scope of existing technology), and of Hans Von Ohain, who beat Whittle to the punch by building the first fully operational jet engine in 1939 as Germany chased advantages in the global conflict.

                                               ( . . . )
  

RAF = Royal Air Force

LEADBEATER, C. Adaptado de Frank Whittle and the invention of the jet engine: Six places to trace his genius. In: The Telegraph. Disponível em: <https://www.telegraph.co.uk/travel/destinations/europe/unitedkingdom/england/articles/frank-whittle-and-the-birth-of-the-jet-engine/>. Acesso em: 08/06/2018


Choose the correct option.
Alternativas
Q978267 Inglês

                                                 Texto 4


      FRANK WHITTLE AND THE INVENTION OF THE JET ENGINE:

                            SIX PLACES TO TRACE HIS GENIUS


      It was, in many ways, a very British sort of achievement. When the turbine began to spin on the “WU” – the prototype jet engine developed by the Coventry-born engineer Frank Whittle – it was a moment which changed the world. Had you been passing through the byways of Rugby, in Warwickshire, more than 80 years ago, you might even have heard it. A thrum of mechanics in sync, building and building, growing in intensity to become a roar; a giddy howl which would permanently alter the way we journey around our planet.

      And yet it might so easily not have happened. Whittle’s triumph – on April 12, 1937 – was garnered in the face of official indifference and scientific doubt, and was only pulled off by a merest financial hair’s breadth, with the Second World War crowding in on all sides.

                                             ( . . . )

       Here was a visionary who began fomenting his design for a jet engine as early as 1927, and patented it in 1930, yet had to swim against the current after seeing his idea pooh-poohed by the UK's Air Ministry – which, upon seeing the blueprint in 1929, deemed it “impracticable.”

      Undeterred, Whittle took his own path. In January 1936, he founded a private company, Power Jets Ltd, with aeronautical engineer Rolf Dudley Williams and retired RAF officer James Collingwood Tinling. With £2,000 of funding from O.T. Falk & Partners – an investment bank which was known for taking risks – the trio began converting what had been decried as fantasy into reality. That first blur of blades as the WU (Whittle Unit) screamed into life was followed by a series of leaps forward.

      The Air Ministry placed its first order for Whittle’s brainwave in January 1940. The first jet-powered British plane took off from RAF Cranwell, Lincolnshire, on May 15, 1941. The rest is so much history.

      None of this occurred in isolation. The story of the jet engine can never be told without mentions of Maxime Guillaume, who secured a French patent for a jet engine with a gas turbine in 1921 (no prototype was ever produced as it was beyond the scope of existing technology), and of Hans Von Ohain, who beat Whittle to the punch by building the first fully operational jet engine in 1939 as Germany chased advantages in the global conflict.

                                               ( . . . )
  

RAF = Royal Air Force

LEADBEATER, C. Adaptado de Frank Whittle and the invention of the jet engine: Six places to trace his genius. In: The Telegraph. Disponível em: <https://www.telegraph.co.uk/travel/destinations/europe/unitedkingdom/england/articles/frank-whittle-and-the-birth-of-the-jet-engine/>. Acesso em: 08/06/2018


Choose the correct option.
Alternativas
Q978266 Inglês

                                                 Texto 4


      FRANK WHITTLE AND THE INVENTION OF THE JET ENGINE:

                            SIX PLACES TO TRACE HIS GENIUS


      It was, in many ways, a very British sort of achievement. When the turbine began to spin on the “WU” – the prototype jet engine developed by the Coventry-born engineer Frank Whittle – it was a moment which changed the world. Had you been passing through the byways of Rugby, in Warwickshire, more than 80 years ago, you might even have heard it. A thrum of mechanics in sync, building and building, growing in intensity to become a roar; a giddy howl which would permanently alter the way we journey around our planet.

      And yet it might so easily not have happened. Whittle’s triumph – on April 12, 1937 – was garnered in the face of official indifference and scientific doubt, and was only pulled off by a merest financial hair’s breadth, with the Second World War crowding in on all sides.

                                             ( . . . )

       Here was a visionary who began fomenting his design for a jet engine as early as 1927, and patented it in 1930, yet had to swim against the current after seeing his idea pooh-poohed by the UK's Air Ministry – which, upon seeing the blueprint in 1929, deemed it “impracticable.”

      Undeterred, Whittle took his own path. In January 1936, he founded a private company, Power Jets Ltd, with aeronautical engineer Rolf Dudley Williams and retired RAF officer James Collingwood Tinling. With £2,000 of funding from O.T. Falk & Partners – an investment bank which was known for taking risks – the trio began converting what had been decried as fantasy into reality. That first blur of blades as the WU (Whittle Unit) screamed into life was followed by a series of leaps forward.

      The Air Ministry placed its first order for Whittle’s brainwave in January 1940. The first jet-powered British plane took off from RAF Cranwell, Lincolnshire, on May 15, 1941. The rest is so much history.

      None of this occurred in isolation. The story of the jet engine can never be told without mentions of Maxime Guillaume, who secured a French patent for a jet engine with a gas turbine in 1921 (no prototype was ever produced as it was beyond the scope of existing technology), and of Hans Von Ohain, who beat Whittle to the punch by building the first fully operational jet engine in 1939 as Germany chased advantages in the global conflict.

                                               ( . . . )
  

RAF = Royal Air Force

LEADBEATER, C. Adaptado de Frank Whittle and the invention of the jet engine: Six places to trace his genius. In: The Telegraph. Disponível em: <https://www.telegraph.co.uk/travel/destinations/europe/unitedkingdom/england/articles/frank-whittle-and-the-birth-of-the-jet-engine/>. Acesso em: 08/06/2018


Choose the correct option.
Alternativas
Q978265 Inglês

                                           Texto 3

THE DISCOVERY OF PENICILLIN—NEW INSIGHTS AFTER MORE THAN 75 YEARS OF CLINICAL USE


ABSTRACT   

        After just over 75 years of penicillin’s clinical use, the world can see that its impact was immediate and profound. In 1928, a chance event in Alexander Fleming’s London laboratory changed the course of medicine. However, the purification and first clinical use of penicillin would take more than a decade. Unprecedented United States/Great Britain cooperation to produce penicillin was incredibly successful by 1943. This success overshadowed efforts to produce penicillin during World War II in Europe, particularly in the Netherlands. Information about these efforts, available only in the last 10–15 years, provides new insights into the story of the first antibiotic. Researchers in the Netherlands produced penicillin using their own production methods and marketed it in 1946, which eventually increased the penicillin supply and decreased the price. The unusual serendipity involved in the discovery of penicillin demonstrates the difficulties in finding new antibiotics and should remind health professionals to expertly manage these extraordinary medicines.

                                                      ( . . . )

GAYNES, R. The Discovery of Penicillin—New Insights After More Than 75 Years of Clinical Use. In: Science, 2017. Disponível em: <http://wwwnc.cdc.gov/eid/article/23/5/16-1556_article>. Acesso em: 26/06/2018.

Choose the correct option.


The meaning of the word “serendipity” in the sentence: “The unusual serendipity involved in the discovery of penicillin demonstrates the difficulties in finding new antibiotics (...)” is:

Alternativas
Q978264 Inglês

                                           Texto 3

THE DISCOVERY OF PENICILLIN—NEW INSIGHTS AFTER MORE THAN 75 YEARS OF CLINICAL USE


ABSTRACT   

        After just over 75 years of penicillin’s clinical use, the world can see that its impact was immediate and profound. In 1928, a chance event in Alexander Fleming’s London laboratory changed the course of medicine. However, the purification and first clinical use of penicillin would take more than a decade. Unprecedented United States/Great Britain cooperation to produce penicillin was incredibly successful by 1943. This success overshadowed efforts to produce penicillin during World War II in Europe, particularly in the Netherlands. Information about these efforts, available only in the last 10–15 years, provides new insights into the story of the first antibiotic. Researchers in the Netherlands produced penicillin using their own production methods and marketed it in 1946, which eventually increased the penicillin supply and decreased the price. The unusual serendipity involved in the discovery of penicillin demonstrates the difficulties in finding new antibiotics and should remind health professionals to expertly manage these extraordinary medicines.

                                                      ( . . . )

GAYNES, R. The Discovery of Penicillin—New Insights After More Than 75 Years of Clinical Use. In: Science, 2017. Disponível em: <http://wwwnc.cdc.gov/eid/article/23/5/16-1556_article>. Acesso em: 26/06/2018.

Choose the correct option.
Alternativas
Q978263 Inglês

                                                     Texto 2

CORPORATE CONTROL AND GLOBAL GOVERNANCE OF MARINE GENETIC RESOURCES

INTRODUCTION   

      The prospect of the ocean generating a new era of “blue growth” is increasingly finding its way into national and international policy documents around the world and has spurred a rush to claim ocean space and resources. If economic activities in coastal and offshore areas are to expand in an equitable and sustainable manner, in line with the Sustainable Development Goals (SDGs), progress is needed toward addressing multiple and potentially conflicting uses of ocean space within national jurisdictions, in addition to developing a consistent and transparent legal framework for the vast areas beyond national jurisdiction (ABNJ). These areas cover 64% of the world’s ocean and 47% of the Earth’s surface yet remain poorly understood or described.   

      Marine organisms have evolved to thrive in the extremes of pressure, temperature, chemistry, and darkness found in the ocean, resulting in unique adaptations that make them the object of commercial interest, particularly for biomedical and industrial applications. By 2025, the global market for marine biotechnology is projected to reach $6.4 billion, spanning a broad range of commercial purposes for the pharmaceutical, biofuel, and chemical industries. One way to ensure exclusive access to these potential economic benefits is through patents associated with “marine genetic resources” (MGRs). Although the term MGRs has never been formally described, it suggests a subset of “genetic resources”, which have been defined under the Convention on Biological Diversity (CBD) as “genetic material of actual or potential value”._(33)_. The adoption of the Nagoya Protocol in 2010 represented an important step within the international policy arena to define obligations associated with monetary and nonmonetary benefit sharing of genetic resources and their products sourced from within national jurisdictions. No such mechanism currently exists for ABNJ.

                                                     ( . . . )

BLASIAK, R.; JOUFFRAY, JB.; WABNITZ, C.; SUNDSTROM, E. e OSTERBLOM, H. Adaptado de Corporate control and global governance of marine genetic resources. In: Science Advances. Disponível em <http://advances.sciencemag.org/ content/4/6/eaar5237.full>. Acesso em: 07/08/2018.

Choose the appropriate continuation for “Although the term MGRs has never been formally described, it suggests a subset of ‘genetic resources,’ which have been defined under the Convention on Biological Diversity (CBD) as ‘genetic material of actual or potential value’.”
Alternativas
Respostas
3601: B
3602: B
3603: D
3604: A
3605: D
3606: C
3607: E
3608: C
3609: D
3610: B
3611: D
3612: B
3613: E
3614: E
3615: C
3616: D
3617: A
3618: B
3619: C
3620: D