Question

3. Suppose college faculty members with the rank of professor at two-year institutions earn an average of $52,500 per year with a standard deviation of $4,000. In an attempt to verify this salary level, a random sample of 60 professors was selected from a personnel database for all two-year institutions in the United States. A. What are the mean and standard deviation of the sampling distribution for n = 60? (2 points) B. What's the shape of the sampling distribution for n = 60? (1 point) C. Calculate the probability the sample mean x-bar is greater than $55,000. (1 point) D. If you drew a random sample with a mean of $55,000, would you consider this sample unusual? What conclusions might you draw? (1 point)

Answer 1

mean is 52,000 & sd is 4000/ squareroot of 60

Step-by-step explanation:

Answer 2

Hi Ashley Sacha! Did you figure out the problem? I'm having troubles on this question too. Also are we in the same Stats class? :/