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Computer Literacy Test If 80% of job applicants are able
Chapter 5, Problem 17RE(choose chapter or problem)
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)
Questions & Answers
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.