Mathematics, 10.01.2020 06:31 HeroicEddie

Amanager records the repair cost for 4 randomly selected tvs. a sample mean of $88.46 and standard deviation of $17.20 are subsequently computed. determine the 99% confidence interval for the mean repair cost for the tvs. assume the population is approximately normal. a. find the critical value that should be used in constructing the confidence interval. round your answer to three decimal places. b. construct the 99% confidence interval. round your answer to two decimal places.

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Amanager records the repair cost for 4 randomly selected tvs. a sample mean of $88.46 and standard d...

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