A random variable follows the normal probability distribution with a mean of 80 and a standard deviation

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A random variable follows the normal probability distribution with a mean of 80 and a standard deviation of 20.

What is the probability that a randomly selected value from this population

a. is less than 90?

b. is less than 65?

c. is more than 110?

d. is more than 40?

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Business Statistics

ISBN: 9780133852288

2nd Edition

Authors: Robert A Donnelly, Robert Donnelly Jr

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