Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 5 - Discrete Probability Distributions - 5-2 Probability Distributions - Page 206: 3

Answer

It is a probability distribution.

Work Step by Step

It is a probability distribution, because each probability for each value is more than 0 and the sum of the probabilities is equal to 1 (therefore no other values have probabilities): $\sum P(x)=1.25+0.375+0.375+0.125=1$.
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