(Answered) A researcher records the repair cost for 8 randomly

Economics

A researcher records the repair cost for 8 randomly selected washers. A sample mean of $60.46 and standard deviation of $18.36 are subsequently computed. Determine the 90% confidence interval for the mean repair cost for the washers. 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.

Step 2 of 2: Construct the 90% confidence interval. Round your answer to two decimal places.

Find the Lower endpoint and upper endpoint

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