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Mathematics, 24.06.2020 22:01 donuteatingcat
A consumer affairs investigator records the repair cost for 4 randomly selected TVs. A sample mean of $91.78 and standard deviation of $23.13 are subsequently computed. Determine the 90% 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 consumer affairs investigator records the repair cost for 4 randomly selected TVs. A sample mean o...
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