Mathematics, 26.11.2020 19:40 aprilkenedy12

A supervisor records the repair cost for 14 randomly selected refrigerators. A sample mean of $79.20 and standard deviation of $10.41 are subsequently computed. Determine the 90% confidence interval for the mean repair cost for the mean repair cost for the refrigerators. Assume the population is approximately normal.

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A supervisor records the repair cost for 14 randomly selected refrigerators. A sample mean of $79.20...