MNM Corporation gives each of its employees an aptitude test. The scores on the test are normally distributed with a mean of 75 and a standard deviation of 15. A simple random sample of 25 is taken from a population of 500. (a) What is the probability that the average aptitude test score in the sample will be between 70.14 and 82.14? (b) What is the probability that the average aptitude test score in the sample will be equal to or greater than 82.68?

MNM Corporation gives each of its employees an aptitude test. The scores on the test are normally distributed with a mean of 75 and a standard deviation of 15. A simple random sample of 25 is taken from a population of 500. (a) What is the probability that the average aptitude test score in the sample will be between 70.14 and 82.14? (b) What is the probability that the average aptitude test score in the sample will be equal to or greater than 82.68?

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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