Question

In a test of the effectiveness of garlic for lowering cholesterol, 45 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 have a mean of 5.2 and a standard deviation of 17.9. What is the best point estimate of the population mean net change in LDL cholesterol after garlic treatment? Construct a 99% confidence interval estimate of the mean net change in LDL cholesterol after garlic treatment.

Answer 1

TOPIC: Confidence interval for the Population mean net change.

d sample mean, dittenence = 5.2.3 ere nee ラ> The best k'int estimate_of thepopulation mean met change in LDL cholas terol yten gar Ua treatment, is J-5.2. LA-9 . ma nan x t 녀,1 15 x to,005 j4 h- dist x 2. 6923. 2-6923 15 required gg%, cortidence dntewaL estima友ヅthe mean net change 3C cholestorol ofter , in 5.2 T. 1841 5.2 7.184t 二(-1. 984[ノ12-3841). Rounded to two deeimals