Use The Following information Younie is a personnel manager in A large corporation Each month She must Review le of the Employees. From past Experience, she has Found That REVIEW Take her approximately Four hours each to do with a population standard deviation of 12 hour. Let X be The Random Vanable Representing The TIM 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. a. What is the mean, standard deviation, and sample size? Complete the distributions. b . X ~_ _)Find the probability that one review will take Yoonie from 3.5 to 4.25 C. X ~ hours. Sketch the graph, labeling and scaling the horizontal axis. Shade the region corresponding to the probability. PC