The Comfort Widget Company makes several different sized widgets. The smallest widget the company manufatures has a mean diameter of 3.5 inches with a standard deviation of .35 inches. The distrabution of measurements for this wiedget's diameter is approximately normal.
A. What is the probability that a single widget will have a diameter greater than 3.7 inches?
B. Describe the distribution of sample mean diameters for samples of size 40.
C. What is the probablility that a sample of 40 small widgets will have a mean diameter greater than 3.7 inches?