MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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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 $24.98 for grounds persons, $21.80 for custodians, and $17.66 for assistant cooks. Suppose that a second school district employs n = 49 grounds persons who earn an average of $22.95 per hour with a standard deviation of s = $2.81. Find a 95% confidence interval for the average hourly wage (in dollars) of grounds persons in school districts similar to this one. (Round your answers to two decimal places.) $ ____ to $ ____ Does your confidence interval enclose the Auburn, WA average of $24.98? - Yes - No What can you conclude about the hourly wages for grounds persons in school districts similar to the second school district? - Auburn, WA pays all workers significantly less per hour, on average, than districts like the second school district pay. - Auburn, WA pays grounds persons significantly more per hour, on average, than districts like the second school district pay. - Auburn, WA pays all workers significantly more per hour, on average, than districts like the second school district pay. - No conclusion can be made based on the confidence interval. - Auburn, WA pays grounds persons significantly less per hour, on average, than districts like the second school district pay.
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Transcribed Image Text: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 $24.98 for grounds persons, $21.80 for custodians, and $17.66 for assistant cooks. Suppose that a second school district employs n = 49 grounds persons who earn an average of $22.95 per hour with a standard deviation of s = $2.81. Find a 95% confidence interval for the average hourly wage (in dollars) of grounds persons in school districts similar to this one. (Round your answers to two decimal places.) $ ____ to $ ____ Does your confidence interval enclose the Auburn, WA average of $24.98? - Yes - No What can you conclude about the hourly wages for grounds persons in school districts similar to the second school district? - Auburn, WA pays all workers significantly less per hour, on average, than districts like the second school district pay. - Auburn, WA pays grounds persons significantly more per hour, on average, than districts like the second school district pay. - Auburn, WA pays all workers significantly more per hour, on average, than districts like the second school district pay. - No conclusion can be made based on the confidence interval. - Auburn, WA pays grounds persons significantly less per hour, on average, than districts like the second school district pay.
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