Remaining Time: Unlimited Yoonie is a personnel manager in a large corporation. Each month she must review 19 of the employees. From past experience, she has found that the reviews take her approximately 2.5 hours each to do with a population standard deviation of 0.9 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 19 reviews. Assume that the 19 reviews represent a random set of reviews. (a) What is the mean, standard deviation, and sample size? Mean = Number Standard Deviation = Number Sample Size = Number (b) Complete the distributions. Round all decimals to four decimal places. X~|Click for List ( Number Number X ~ Click for List ( Number Number