The discrete random variable X has probability distribution given by X₂ 1 2 3 P 0.7 2k k (1) Find the value of k. (2) Find E(X),Var (X) and the standard deviation of X.

Algebra & Trigonometry with Analytic Geometry
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ISBN:9781133382119
Author:Swokowski
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Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 10E
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The discrete random variable X has probability distribution given by
X 1 2 3
P
0.7 2k k
(1) Find the value of k.
(2) Find E(X),Var (X) and the standard deviation of X.
Transcribed Image Text:The discrete random variable X has probability distribution given by X 1 2 3 P 0.7 2k k (1) Find the value of k. (2) Find E(X),Var (X) and the standard deviation of X.
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