b00c3be5-a-researcher-collects-a-simple-random-sample-of-cholesterol-levels-from

Question

A researcher collects a simple random sample of cholesterol levels from 2525 adult men and finds the sample standard deviation is 18.718.7 mg/dL	ext{mg/dL}. Test, at the 0.010.01 significance level, the claim that the standard deviation of cholesterol levels in adult men is the same as the known standard deviation for adult women, which is 15.215.2 mg/dL	ext{mg/dL}.

Accepted Answer

Fail to reject the null hypothesis; there is not enough evidence to conclude a difference in standard deviations.

Answer

Reject the null hypothesis; the standard deviation for men is significantly higher.

Answer

Reject the null hypothesis; the standard deviation for men is significantly lower.

Answer

Fail to reject the null hypothesis; the sample size is too small.