1) Total cholesterol levels were measured in a random sample of 500 men, and the

Question

1) Total cholesterol levels were measured in a random sample of 500 men, and the resulting 95% confidence interval for the mean was (173.1, 177.1). Indicate which of the following interpretations is correct:

a) 95% of the men in the sample had total cholesterol levels between 173.1 and 177.1.

b) The probability that the true mean total cholesterol level for men lies between 173.1 and 177.1 is 0.95.

c) If we computed similar confidence intervals based on many random samples of 500 men, approximately 95% of them would contain the population mean total cholesterol level for men.

d) The confidence interval does not contain 0, so we reject the null hypothesis.

Explanation / Answer

We are 95% confident that the true mean cholesterol level for men lies between 173.1 and 177.1

Option B is correct

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