Question

Consider a random variable X with the following probability distribution: P(X=0) = 0.08, P(X=1) = 0.22,...

Consider a random variable X with the following probability distribution:


P(X=0) = 0.08, P(X=1) = 0.22, P(X=2) = 0.25, P(X=3) = 0.25, P(X=4) = 0.15, P(X=5) = 0.05

Find the expected value of X and the standard deviation of X.

Math   Statistics-And-Probability   
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Answer #1

0 0.08 0 0 0
1 0.22 0.22 1 0.22
2 0.25 0.5 4 1
3 0.25 0.75 9 2.25
4 0.15 0.6 16 2.4
5 0.05 0.25 25 1.25

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