Computer Literacy Test If 80% of job applicants are able

Chapter 5, Problem 17RE

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QUESTION:

Problem 17RE

Computer Literacy Test If 80% of job applicants are able to pass a computer literacy test, find the mean. variance, and standard deviation of the number of people who pass the examination in a sample of 150 applicants. (5−3)

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QUESTION:

Problem 17RE

Computer Literacy Test If 80% of job applicants are able to pass a computer literacy test, find the mean. variance, and standard deviation of the number of people who pass the examination in a sample of 150 applicants. (5−3)

ANSWER:

Solution:

Step 1 of 2:

Given, 80% of the job applicants are able to pass a computer literacy test in a sample of 150 applicants.

Let X follows the Binomial distribution with the probability mass function

P(X = x) =

Where, p = 0.80, and n = 150

The claim is to find the mean, variance, and the standard deviation.


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