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 23.05 points. A random sample of 16 test scores from the currentgroup of applicants had a mean score of 72.66 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 61.5384 to 83.7816 points. Find the confidence level 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 23.05 points. A random sample of 16 test scores from the curren group of applicants had a mean score of 72.66 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 61.5384 to 83.7816 points. Find the confidence level 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 23.05 points. A random sample of 16 test scores from the curren group of applicants had a mean score of 72.66 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 61.5384 to 83.7816 points. Find the confidence level of this interval.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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