A person makes an average of 3.12 phone calls a day with a standard deviation of 1.77
Question:
a. What is the expected value of X2?
b. What is the expected value of - 12X + 10?
c. Find the variance of - 12X + 10.
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Step by Step Answer:
a Var X E X 2 E X 2 so 177 2 E X 2 312 2 ...View the full answer
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Related Book For 
Introduction to Probability
ISBN: 978-0716771098
1st edition
Authors: Mark Daniel Ward, Ellen Gundlach
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