In addition to teachers and administrative staff, schools also have many other employees, including bus drivers, custodians,

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In addition to teachers and administrative staff, schools also have many other employees, including bus drivers, custodians, and cafeteria workers. In Auburn, WA, the average hourly wage is $16.92 for bus drivers, $17.65 for custodians, and $12.86 for cafeteria workers. Suppose that a second school district employs n = 36 bus drivers who earn an average of $13.45 per hour with a standard deviation of s = $2.84. Find a 95% confidence interval for the average hourly wage of bus drivers in school districts similar to this one. Does your confidence interval enclose the Auburn, WA average of $16.92? What can you conclude about the hourly wages for bus drivers in this second school district?
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Introduction To Probability And Statistics

ISBN: 9781133103752

14th Edition

Authors: William Mendenhall, Robert Beaver, Barbara Beaver

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