Solved: Find the sample size needed to construct a 99 confidence, Basic Statistics

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Find the sample size needed to construct a 99 confidence

A company wants to estimate the mean repair cost for dishwashers with a margin of error about $10. Find the sample size needed to construct a 99% confidence z-interval estimate of the mean. It is reasonable to estimate that the population standard deviation is $22.50.

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Basic Statistics: Find the sample size needed to construct a 99 confidence

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Basic Statistics: Find the sample size needed to construct a 99 confidence

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