In order to determine the average labor cost for car repairs for a large chain of car

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In order to determine the average labor cost for car repairs for a large chain of car repair shops, a random sample (of repair costs) will be surveyed. From previous studies the population standard deviation of repair costs was found to be $8.20. What size sample would be necessary in order to calculate a 92% confidence interval with a margin of error of only $0.75?

Posted Date: May 17, 2024 05:06 AM

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In order to determine the average labor cost for car repairs for a large chain of car

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