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 20.35 points. A random sample of 15 test scoresfrom the current group of applicants had a mean score of 68.47 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 58.8545 to 78.0855 points. Find theconfidence level (as a value between zero and one) of this interval.Proble

Standard deviations σ=20.35, n=15, sample mean x̄=68.47

Answered: personnel manager has found that,…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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