Cholesterol The level of cholesterol in the blood for all men aged 20 to 34 follows a Normal distribution with mean 188 milligrams per deciliter (mg/dl) and standard deviation 41 mg/dl. For 14-year-old boys, blood cholesterol levels follow a Normal distribution with mean 170 mg/dl and standard deviation 30 mg/dl. Suppose we select independent SRSs of 25 men aged 20 to 34 and 36 boys aged 14 and calculate the sample mean cholesterol levels x M and x B. (a) What is the shape of the sampling distribution of x M x B? Why? (b) Find the mean of the sampling distribution. Show your work. (c) Find the standard deviation of the sampling distribution. Show your work.

1 STAT 145 Introduction to Statistics 1 Chapter 1 Data Collection Terms ormulas 1.1 Introduction to the Practice to Statistics Objectives: Definitions and process of statistics / Qualitative vs. Quantitative Statistical...