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Mathematics, 25.03.2020 06:36 btcastongia

A consumer affairs investigator records the repair cost for 4 randomly selected TVs. A sample mean of $87.52 and standard deviation of $19.29 are subsequently computed. Determine the 80% confidence interval for the mean repair cost for the TVs. Assume the population is approximately normal.

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A consumer affairs investigator records the repair cost for 4 randomly selected TVs. A sample mean o...

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