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Barron's reported that the average number of weeks an individual is unemployed is 17.5 weeks. Assume...

Barron's reported that the average number of weeks an individual is unemployed is 17.5 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 17.5 and that the population standard deviation is 4 weeks. Suppose you would like to select a sample of 50 unemployed individuals for a follow-up study.

What is the probability that a simple random sample of 50 unemployed individuals will provide a sample mean within 1 week of the population mean? (Round to four decimal places) Answer

What is the probability that a simple random sample of 50 unemployed individuals will provide a sample mean within 1/2 week of the population mean? (Round to four decimal places) Answer

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