Answer
No
Work Step by Step
1. Check if each probability satisfies
$0\leq P(X)\leq 1$
All probabilities satisfy this condition.
2. Check if the total sum is 1:
$0.4+0.3+0.2+1=1.9\not =1$
This is not a valid probability distribution.
Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition
by Bluman, Allan
Published by
McGraw-Hill Education
ISBN 10:
0078136334
ISBN 13:
978-0-07813-633-7
Chapter 5 - Discrete Probability Distributions - 5-1 Probability Distributions - Exercises 5-1 - Page 264: 11
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