stats pt 2

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An eight-year cohort study of 3,454 initially disease-free volunteer men and women (ages around 60 years or more) recorded the extent of physical activity the participants engaged in and whether or not they were showing signs of healthy aging. The results are given in the table below.

Inactive Moderate Vigorous ROW TOTAL
Healthy aging 55 345 265 665
Unhealthy aging 598 1347 844 2789
COLUMN TOTAL 653 1692 1109 n = 3454

Answer the following questions based on this information.

Flag this QuestionQuestion 16 pts

What is the explanatory and response variables?

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What is the null hypothesis?

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What is the alternative hypothesis?

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Are the validity conditions satisfied?

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Flag this QuestionQuestion 56 pts

The test statistic LaTeX: chi^2 = 66.050



χ


2



=


66.050

and the p-value = 0. Which of the following statements are true. Select all that are true.

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Flag this QuestionQuestion 66 pts

Select all of the following statements which are true.

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Flag this QuestionQuestion 76 pts

Which of the following describes the consequences if the researchers had made a type I error?

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Flag this QuestionQuestion 86 pts

Which of the following describes the consequences if the researchers had made a type II error?

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Flag this QuestionQuestion 92 pts

On a scale of 1 to 10, rate how weird this semester has been. 1 meaning not weird at all and 10 meaning very weird.

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