In a test of the effectiveness of garlic for lowering choles

In a test of the effectiveness of garlic for lowering cholesterol, 4343 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes in their levels of LDL cholesterol (in mg/dL) have a mean of 5.55.5 and a standard deviation of 16.716.7. Complete parts (a) and (b) below.

A - What is the best point estimate of the population mean net change in LDL cholesterol after the garlic treatment?

The best point estimate is _______ mg/dL.

Solution

The best point estimate is mean itself.

So

The best point estimate is 5.5 md/dL