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Mathematics, 15.04.2020 23:09 AdoNice
A student records the repair cost for 17 randomly selected washers. A sample mean of $82.95 and standard deviation of $14.89 are subsequently computed. Determine the 80% 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 80% confidence interval. Round your answer to two decimal places. Lower Endpoint: Upper Endpoint:
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A student records the repair cost for 17 randomly selected washers. A sample mean of $82.95 and stan...
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