Mathematics, 01.04.2020 21:07 CXS2003
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 the random sample is 40, calculate the 90 percent confidence interval for the average cost of the repair at this repair shop.
Show all steps including checking conditions, work, and interpretation.
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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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