Mathematics, 01.04.2020 21:41 reeeg38
A random sample of the costs of repair jobs at a large muffler repair shop produces a mean of $127.95. and a standard deviation of $24.03. If the size of this sample is 40, which of the following is an approximate 90 percent confidence interval for the average cost of a repair at this repair shop
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A random sample of the costs of repair jobs at a large muffler repair shop produces a mean of $127.9...
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