Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the

employees. From past experience, she has found that the reviews take her approximately four hours

each to do with a population standard deviation of 1.2 hours. Let X be the random variable

representing the time it takes her to complete one review. Assume X is normally distributed. Let X

be the random variable representing the mean time to complete the 16 reviews. Assume that the 16

reviews represent a random set of reviews. What are the mean, the standard deviation, and the

sample size