Find conditions on the numbers a and b such that the table gives the probability distribution of the random variable X. x     −1         0         1         2         4         5     P(X = x) 0.2 a 0.3 0.3 b 0.1 a + b =

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Find conditions on the numbers a and b such that the table gives the probability distribution of the random variable X.

x     −1         0         1         2         4         5    
P(X = x)
0.2 a 0.3 0.3 b 0.1

a + b =

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