Foram encontradas 60 questões.
Um instituto de pesquisa realizará um levantamento por amostragem para avaliar diversas características da população formada por 300 famílias moradoras de um bairro. Pode-se admitir, com alta confiabilidade, com erros amostrais abaixo dos 2%, que o tamanho da amostra aleatória simples é de:
Provas
O departamento de riscos e corrosões de uma empresa de engenharia recebe, em média, duas chamadas por hora. Considerando que a distribuição de Poisson seja adequada nessa situação, a probabilidade de que o departamento em questão não receba nenhuma chamada durante o intervalo de uma hora é de:
Provas
O departamento de engenharia mecânica de uma empresa estima que a probabilidade de uma empresa concorrente planejar a fabricação de equipamentos para área naval, dentro dos próximos três anos, é de 0,30. Se a concorrência tem tais planos, será certamente construída uma fábrica nova. Caso contrário, há ainda uma probabilidade de 0,60 de, por qualquer outra razão, a concorrente construir uma nova fábrica. Se iniciou os trabalhos de construção de uma fábrica, a probabilidade de que a concorrência tenha decidido entrar para área naval é de:
Provas
Considere o modelo de séries temporais dado por:
!$ Z_t = 0,5Z_{t-1} + a_t !$
sendo que !$ a_t !$ é um ruído branco de média zero e variância 2. Nessas condições, a variância de !$ Z_t !$ é:
Provas
Considere que um analista financeiro toma uma amostra aleatória de 18 faturas (X) e os seus respectivos lucros (Y), obtendo os seguintes resultados: !$ \sum X = 350 !$, !$ \sum Y = 524 !$, !$ \sum X^2 = 7778 !$ e !$ \sum XY = 11161 !$.
Com base nos resultados apresentados, o modelo de regressão linear que representa essa amostra é:
Provas
Observe o gráfico a seguir:
De acordo com o gráfico, o consumo mediano de energia elétrica, em kWh, nesse período, é de:
Provas
A tabela a seguir apresenta as notas da dois grupos da alunos de uma disciplina de Engenharia. Os dois grupos obtiveram a mesma média:
Com base nessa informação, a medida estatística que permite identificar o grupo mais homogêneo é:
Provas
Uma empresa de logística realiza uma pesquisa de satisfação para avaliar a qualidade dos quatro tipos de serviços prestados aos seus dez clientes. A qualidade é classificada como Excelente (E), Boa (B), Regular (R) e Fraca (F). Os resultados dos questionários estão na tabela a seguir:
Com base na tabela, pode-se afirmar que:
Provas
Science, Technology & Innovation Policy in Brazil
In the field of Science, Technology & Innovation, the greatest challenge in Brazil has been in designing and implementing a long-term policy that enables scientific and technological development to reach the population in order to improve life quality.
This policy should have an effective impact on improving society's living conditions.
This is a process, which has been enhanced through time and has increasingly shown the great potential that public and private investment in Science, Technology & Innovation has for generating development and social integration. [...]
Electing Science, Technology & Innovation as a strategic choice for the country's development implies prioritizing investments in this sector, to recoup losses and swiftly advance in the production and dissemination of knowledge and innovation, particularly in relation to its incorporation in national production. This also means advocating on behalf of the importance of Science, Technology & Innovation as a factorthat integrates other government development policies. In this context, it is necessary for citizens to closely follow advancements and to be prepared to participate in decisions that are important for society.
When it comes to Science, Technology & Innovation management, Brazil relies on a structured system composed of a central coordinating body and development agencies in charge of defining and implementing development policies on science, technology, and innovation. The State and local levei Science, Technology & Innovation management systems follow the same model for development policies attuned to regional and local vocations.
Due to the country's dimensions, to difficulties encountered in its management structure, and, above ali, to implementing national policies capable of simultaneously addressing varied regional needs, the scientific and technological knowledge produced is still slow to produce significant changes in the social inequities found in some regions. Therefore, the problems faced by Brazil in the fields of Science, Technology & Innovation are complex and can hardly be solved in the short term.
Adapted from:
https:/Ien.unesco.org/fieldoffice/brasilia/expertise/science-technology-
innovation Access on February 11,2022.
In "Therefore, the problems faced by Brazil in the fields of Science, Technology & Innovation are complex and can hardly be solved in the short term", the highlighted expression introduces:
Provas
Science, Technology & Innovation Policy in Brazil
In the field of Science, Technology & Innovation, the greatest challenge in Brazil has been in designing and implementing a long-term policy that enables scientific and technological development to reach the population in order to improve life quality.
This policy should have an effective impact on improving society's living conditions.
This is a process, which has been enhanced through time and has increasingly shown the great potential that public and private investment in Science, Technology & Innovation has for generating development and social integration. [...]
Electing Science, Technology & Innovation as a strategic choice for the country's development implies prioritizing investments in this sector, to recoup losses and swiftly advance in the production and dissemination of knowledge and innovation, particularly in relation to its incorporation in national production. This also means advocating on behalf of the importance of Science, Technology & Innovation as a factorthat integrates other government development policies. In this context, it is necessary for citizens to closely follow advancements and to be prepared to participate in decisions that are important for society.
When it comes to Science, Technology & Innovation management, Brazil relies on a structured system composed of a central coordinating body and development agencies in charge of defining and implementing development policies on science, technology, and innovation. The State and local levei Science, Technology & Innovation management systems follow the same model for development policies attuned to regional and local vocations.
Due to the country's dimensions, to difficulties encountered in its management structure, and, above ali, to implementing national policies capable of simultaneously addressing varied regional needs, the scientific and technological knowledge produced is still slow to produce significant changes in the social inequities found in some regions. Therefore, the problems faced by Brazil in the fields of Science, Technology & Innovation are complex and can hardly be solved in the short term.
Adapted from:
https:/Ien.unesco.org/fieldoffice/brasilia/expertise/science-technology-
innovation Access on February 11,2022.
Choose the alternative in which the words can properly substitute the highlighted terms in the sentence "Electing Science, Technology & Innovation as a strategic choice for the country's development implies prioritizing investments in this sector, to recoup losses and swiftly advance in the production and dissemination of knowledge and innovation ... "
Provas
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