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A sample of320patients between the ages of38 and82were given a combination of drugs ezetimibe and simvastatin. They achieved a mean reduction in total cholesterol of0.94millimole

A sample of320patients between the ages of38 and82were given a combination of drugs ezetimibe and simvastatin. They achieved a mean reduction in total cholesterol of0.94millimole per liter. Assume the population standard deviation is=0.17

(a)Construct a95% confidence interval for the mean reduction in total cholesterol in patients who take this combination of drugs. Round the answer to at least two decimal places .A95%confidence interval for the mean reduction in cholesterol is(_) < < (_)

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