Many firms use on-the-job training to teach their employees computer programming. Suppose you work in he personnel department of a firm that just finished training a group of its employees to program, and you have been requested to review the performance of one of the trainees on the final test that was given to all rainees. The mean and standard deviation of the test scores are 83 and 4, respectively. Assuming nothing is known about the distribution, what percentage of test-takers scored above 91? A) at most 25% B) approximately 97.5% C) approximately 2.5% D) at least 75%

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Many firms use on-the-job training to teach their employees computer programming. Suppose you work in
the personnel department of a firm that just finished training a group of its employees to program, and you
have been requested to review the performance of one of the trainees on the final test that was given to all
trainees. The mean and standard deviation of the test scores are 83 and 4, respecti vely. Assuming nothing is
known about the distribution, what percentage of test-takers scored above 91?
A) at most 25%
B) approximately 97.5%
C) approximately 2.5%
D) at least 75%
Transcribed Image Text:Many firms use on-the-job training to teach their employees computer programming. Suppose you work in the personnel department of a firm that just finished training a group of its employees to program, and you have been requested to review the performance of one of the trainees on the final test that was given to all trainees. The mean and standard deviation of the test scores are 83 and 4, respecti vely. Assuming nothing is known about the distribution, what percentage of test-takers scored above 91? A) at most 25% B) approximately 97.5% C) approximately 2.5% D) at least 75%
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