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 23.69 points. Arandom sample of 15 test scores from the current group of applicants had a mean score of 72.84 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 63.2367 to 82.4433 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 23.69 points. Arandom sample of 15 test scores from the current group of applicants had a mean score of 72.84 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 63.2367 to 82.4433 points. Find the confidence level of this interval.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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