(Answered) A researcher records the repair cost fornbsp8nbsprandomly

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.

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