Generate a 95 confidence interval for the difference in

A study is conducted comparing HDL cholesterol levels between men who exercise regularly and those who do not. The data are shown below.

Generate a 95% confidence interval for the difference in mean HDL levels between men who exercise regularly and those who do not.

1. Z 95% Confidence:
2. Upper Limit 95% CI:
3. Lower Limit 95% CI:

4. Based on examination of the upper and lower limits of the confidence interval for the mean HDL levels which of the following is (are) true.

a. There is statistical evidence of a difference in mean HDL levels between men who exercise regularly and those who do not.

b. There is not statistical evidence of a difference in mean HDL levels between men who exercise regularly and those who do not.

c. The confidence interval contains the mean HDL level.

d. b and c.

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