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 23.29 points. A random sample of 11 test scores from the current group of applicants had a mean score of 72.14 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 58.7276 to 85.5524 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 23.29 points. A random sample of 11 test scores from the current group of applicants had a mean score of 72.14 points. Based on these sample results, a statistician found for the population mean a confidence interval extending from 58.7276 to 85.5524 points. Find the confidence level of this interval.

Name: A personnel manager has found that, historically, thescores on aptitu
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Description: A personnel manager has found that, historically, thescores on aptitude tests given to applicants for entry-level positions follow a normal distribution withstandard deviation 23.29 points. A random sample of11 test scores from the current group of

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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