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For two decades, millions of Americans have taken a medicine called ‘Ambien’ to help them sleep at night. But for years, the Food and Drug Administration (FDA) has gotten complaints that people felt drowsy the morning after taking the medicine or its successors, and sometimes got into car accidents.
After laboratory studies and driving tests confirming the risks of drowsiness, the FDA said that women should be taking half as much of the medicine. The new recommendation applies to drugs containing the active ingredient zolpidem, by far the most widely used sleep aid. Using lower doses means less of the drug will remain in the blood in the morning hours, and will reduce the risk that people who use it will be impaired while driving.
The announcement was focused on women because they take longer to metabolize the drug than men. An estimated 10 percent to 15 percent of women will have a level of zolpidem in their blood that could impair driving eight hours after taking the pill, while only about 3 percent of men do. Reports of aftereffects from sleeping pills have circulated for years, and some doctors questioned why the drug agency took so long to act. Mishaps with sleepy driving — and even strange acts of texting, eating or having sex in the night without any memory of it in the morning — have long been familiar to the medical community.
Internet: <www.nytimes.com> (adapted).
Judge the item according to the text above.
Women face greater risks than men of feeling drowsy in the morning because their bodies take longer to metabolize the drug.
Provas
Na literatura de séries temporais, para se detectar uma tendência são conhecidos, entre outros, o teste de sinais de Cox-Stuart, o teste com base no coeficiente de correlação de Spearman e o run test de Wald-Wolfowitz.
Acerca desse assunto e considerando que Z1, ..., ZN seja uma série temporal, julgue os itens seguintes.
Para a série temporal 2, 8, 7, 9, 12, 6, 11, 10, o valor da estatística T3 do teste com base no coeficiente de correlação de Spearman é 34.
Provas
Na literatura de séries temporais, para se detectar uma tendência são conhecidos, entre outros, o teste de sinais de Cox-Stuart, o teste com base no coeficiente de correlação de Spearman e o run test de Wald-Wolfowitz.
Acerca desse assunto e considerando que Z1, ..., ZN seja uma série temporal, julgue os itens seguintes.
Se a serie temporal for 7, 8, 10, 12, 11, 9, 15, 16, 18, 20, então a quantidade de runs obtidos será igual a 4.
Provas
Na literatura de séries temporais, para se detectar uma tendência são conhecidos, entre outros, o teste de sinais de Cox-Stuart, o teste com base no coeficiente de correlação de Spearman e o run test de Wald-Wolfowitz.
Acerca desse assunto e considerando que Z1, ..., ZN seja uma série temporal, julgue os itens seguintes.
Em um teste bilateral de sinais, se o nível de significância for de 5%, a hipótese de ausência de tendência é aceita para a série temporal 2, 4, 3, 5, 6, 3, 5, 4, 6, 5.
Provas
Considerando essa informação, julgue o item a seguir.
Considere que, para um vetor aleatório \(X\) de 5 componentes, o método de componente principal tenha sido aplicado, com dois fatores comuns, F1 e F2, com as seguintes cargas estimadas:
| variável | F1 | F2 |
|---|---|---|
| X1 | 0,5 | 0,8 |
| X2 | 0,7 | -0,5 |
| X3 | 0,7 | 0,7 |
| X4 | 0,9 | -0,1 |
| X5 | 0,8 | -0,5 |
De acordo com a tabela, é correto afirmar que as comunalidades estimadas são 0,89; 0,74; 0,98; 0,82 e 0,89.
Provas
Julgue os itens seguintes, acerca do ambiente Windows e do Microsoft Office 2010.
O pacote de idiomas do Microsoft Office 2010 está disponível apenas para a revisão ortográfica e gramatical de textos produzidos no Word 2010 e no PowerPoint 2010.
Provas
Acerca de conceitos presentes nas obras de Anthony Guiddens e a respeito de suas ideias, julgue os próximos itens.
Anthony Guiddens critica a pós-modernidade, utilizando o conceito de reflexividade da modernidade.
Provas
For two decades, millions of Americans have taken a medicine called ‘Ambien’ to help them sleep at night. But for years, the Food and Drug Administration (FDA) has gotten complaints that people felt drowsy the morning after taking the medicine or its successors, and sometimes got into car accidents.
After laboratory studies and driving tests confirming the risks of drowsiness, the FDA said that women should be taking half as much of the medicine. The new recommendation applies to drugs containing the active ingredient zolpidem, by far the most widely used sleep aid. Using lower doses means less of the drug will remain in the blood in the morning hours, and will reduce the risk that people who use it will be impaired while driving.
The announcement was focused on women because they take longer to metabolize the drug than men. An estimated 10 percent to 15 percent of women will have a level of zolpidem in their blood that could impair driving eight hours after taking the pill, while only about 3 percent of men do. Reports of aftereffects from sleeping pills have circulated for years, and some doctors questioned why the drug agency took so long to act. Mishaps with sleepy driving — and even strange acts of texting, eating or having sex in the night without any memory of it in the morning — have long been familiar to the medical community.
Internet: <www.nytimes.com> (adapted).
Judge the item according to the text above.
The FDA imposed quick and decisive measures to deal with the use of zolpidem.
Provas
2) para i = 1, 2, ..., faça Xi = (\(a\)Xi – 1 + c) mod (m), em que \(a\), c, e m representam constantes inteiras adequadas.
3) Para i = 1, 2, ..., faça Ui = Xi / m.
O gerador em que X0 = 1 e Xi = (5Xi – 1 + 3) mod (8) é um gerador de período inteiro.
Provas
For two decades, millions of Americans have taken a medicine called ‘Ambien’ to help them sleep at night. But for years, the Food and Drug Administration (FDA) has gotten complaints that people felt drowsy the morning after taking the medicine or its successors, and sometimes got into car accidents.
After laboratory studies and driving tests confirming the risks of drowsiness, the FDA said that women should be taking half as much of the medicine. The new recommendation applies to drugs containing the active ingredient zolpidem, by far the most widely used sleep aid. Using lower doses means less of the drug will remain in the blood in the morning hours, and will reduce the risk that people who use it will be impaired while driving.
The announcement was focused on women because they take longer to metabolize the drug than men. An estimated 10 percent to 15 percent of women will have a level of zolpidem in their blood that could impair driving eight hours after taking the pill, while only about 3 percent of men do. Reports of aftereffects from sleeping pills have circulated for years, and some doctors questioned why the drug agency took so long to act. Mishaps with sleepy driving — and even strange acts of texting, eating or having sex in the night without any memory of it in the morning — have long been familiar to the medical community.
Internet: <www.nytimes.com> (adapted).
Judge the item according to the text above.
The word “its” in the first paragraph refers to “complaints”.
Provas
Caderno Container