Macmillan Learn Suppose that the blood cholesterol levels of all men age 20 to 34 years follows the Normal distribution with mean = 188 milligrams per deciliter (mg/dl) and standard deviation = 41 mg/dl. Choose an SRS of 1000 men from this population. What is the sampling distribution of x? N(5.9451 mg/dl, 1.2965 mg/dl) N(188 mg/dl, 41 mg/dl) N(188 mg/dl, 4.1 mg/dl) N(188 mg/dl, 1.2965 mg/dl) Now what is the probability that x falls within 3 mg/dl of ? Give your answer to four decimal places. P (185 < < 191) = -2.3148