A personnel manager has found that, historically, thescores on aptitude tests given to applicants for entry-level positions follow a normal distribution withstandard deviation 24.64 points. A random sample of11 test scores from the current group of applicantshad a mean score of 73.28 points. Based on thesesample results, a statistician found for the populationmean a confidence interval extending from 59.5359 to87.0241 points. Find the confidence level (as a valuebetween zero and one) of this interval.

Given: Random variable x from normal distribution with population standard deviations ?=24.64…

Answered: sample results, a statistician found…

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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sample results, a statistician found for the population mean a confidence interval extending from 59.5359 to 87.0241 points. Find the confidence level (as a value between zero and one) of this interval.