A researcher records the repair cost for 2222 randomly selected dryers. A sample mean of $84.67$⁢84.67 and standard deviation of $18.09$⁢18.09 are subsequently computed. Determine the 98%98% confidence interval for the mean repair cost for the dryers. Assume the population is approximately normal.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
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A researcher records the repair cost for 2222 randomly selected dryers. A sample mean of $84.67$⁢84.67 and standard deviation of $18.09$⁢18.09 are subsequently computed. Determine the 98%98% confidence interval for the mean repair cost for the dryers. Assume the population is approximately normal.

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