A personnel manager has found that, historically, the scores on aptitude tests given to applicants for entry-level positions follow a normal distribution with standard deviation 25.86 points. A random sample of 13 test scores from the current group of applicants had a mean score of 70.92 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 57.8665 to 83.9735 points. Find the confidence level (as a value between zero and one) of this interval
A personnel manager has found that, historically, the scores on aptitude tests given to applicants for entry-level positions follow a normal distribution with standard deviation 25.86 points. A random sample of 13 test scores from the current group of applicants had a mean score of 70.92 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 57.8665 to 83.9735 points. Find the confidence level (as a value between zero and one) of this interval
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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A personnel manager has found that, historically, the scores on aptitude tests given to applicants for entry-level positions follow a
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