2. Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From 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 is normally distributed. Let )7 be the random variable representing the meantime to complete the 16 reviews. Assume that the 16 reviews represent a random set of reviews. a. [1 points) Complete the distribution: X~ _(__._) i~_(_,_) b. [2 points) Find the probability that one review will take Yoonie from 3.5 to 4.25 hours. Sketch the graph, labeling and scaling the horizontal axis. Shade the region corresponding to the probability