2.

(05.02 LC)

Given a population mean of 42.5 with a standard deviation of 1.8 and a sample size of 7, answer these questions:

Part A: What is the standard deviation of the sampling distribution of x? Show your work. (5 points)

Part B: What does the sample size need to be if you want the standard deviation of the sampling distribution of x to be 0.15? Show your work. (5 points) (10 points)