Yoonie is a personnel manager in a large corporation. Each month she must review 15 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 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 15 reviews. Assume that the 15 reviews represent a random set of reviews. (a) What is the mean, standard deviation, and sample size? Mean = Number Standard Deviation = Number Şample Size = Number

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