Mathematics, 16.04.2021 02:50 username999990
A consumer affairs investigator records the repair cost for 4 randomly selected washers. A sample mean of $52.63 and standard deviation of $22.01 are subsequently computed. Determine the 80% confidence interval for the mean repair cost for the washers. Assume the population is approximately normal. Step 2 of 2 : Construct the 80% confidence interval. Round your answer to two decimal places.
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A consumer affairs investigator records the repair cost for 4 randomly selected washers. A sample me...
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