Determine whether the distribution is a probability distribution.  If it is not a probability distribution, explain why. The random variable x represents the number of classes in which a student is enrolled in a given semester at a university.  x 1 2 3 4 5 6 7 8 P(x) 1 /80 2 /75 1 /10 12/ 25 27 /20 1 /5 2 /25 1/120

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.4: Expected Value
Problem 23E
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Determine whether the distribution is a probability distribution.  If it is not a probability distribution, explain why.

The random variable x represents the number of classes in which a student is enrolled in a given semester at a university. 

x 1 2 3 4 5 6 7 8
P(x) 1 /80 2 /75 1 /10 12/ 25 27 /20 1 /5 2 /25 1/120
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