Solve the following : The following probability distribution of r.v. X X=x -3 -2 -1 0 1 2 3 P(X=x) 0.05 0.1 0.15 0.20 0.25 0.15 0.1 - Mathematics and Statistics

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Sum

Solve the following :

The following probability distribution of r.v. X

X=x -3 -2 -1 0 1 2 3
P(X=x) 0.05 0.1 0.15 0.20 0.25 0.15 0.1

Find the probability that

X is positive

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Solution

P (X is positive) = P(X = 1) + P (X = 2) + P(X = 3)

 = 0.25 + 0.15 +0.1+ = 0.50

Concept: Probability Distribution of Discrete Random Variables
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Chapter 7: Probability Distributions - Miscellaneous Exercise 2 [Page 242]

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Balbharati Mathematics and Statistics 2 (Arts and Science) 12th Standard HSC Maharashtra State Board
Chapter 7 Probability Distributions
Miscellaneous Exercise 2 | Q 3.1 | Page 242

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