Yoonie is a personnel manager in a large corporation. Each month she must review
ID: 3058859 • Letter: Y
Question
Yoonie is a personnel manager in a large corporation. Each month she must review 25 of the employees. From past experience, she has found that the reviews take her approximately 5 hours each to do with a population standard deviation of 1.2 hours. Let be the random variable representing the time it takes her to complete one review. Assume is normally distributed. Let X ¯ be the random variable representing the mean time to complete the 25 reviews. Assume that the 25 reviews represent a random set of reviews.
Complete the distributions.
a. X ~ _____(_____,_____)
b. X ¯ ~ _____(_____,_____)
Explanation / Answer
Yoonie is a personnel manager in a large corporation. Each month she must review 25 of the employees. From past experience, she has found that the reviews take her approximately 5 hours each to do with a population standard deviation of 1.2 hours. Let be the random variable representing the time it takes her to complete one review. Assume is normally distributed. Let X ¯ be the random variable representing the mean time to complete the 25 reviews. Assume that the 25 reviews represent a random set of reviews.
Complete the distributions.
a. X ~ _____(_____,_____)
b. X ¯ ~ _____(_____,_____)
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