Mathematics, 20.07.2021 01:00 thao6570
A manager 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. Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
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A manager records the repair cost for 4 randomly selected TVs. A sample mean of $88.46 and standard...
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