At a large publishing company, the mean age of proofreaders is 36.2 years, and the standard deviation is 3.7 years. Assu

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answerhappygod
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At a large publishing company, the mean age of proofreaders is 36.2 years, and the standard deviation is 3.7 years. Assu

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At a large publishing company, the mean age of proofreaders is36.2 years, and the standard deviation is 3.7 years.
Assume the variable is normally distributed. If a proofreaderfrom the company is randomly selected, find the probability thathis or her age will be between 34.2 and 35.9 years.
P(34.2<x<35.9)
If a random sample of 15 proofreaders is selected, find theprobability that the mean age of the proofreaders in the samplewill be between 34.2 and 35.9 years.
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