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7. A discrete random variable, X, has the following probability distribution: X P(X) _0.1 0.2 (a) (b) (c) xxlda 2 3 What is the probability that X is not more than 1? What is the probability that X is at least 2? Compute E(x), the expected value of x. 0.4 0.3

7. A discrete random variable, X, has the following probability distribution: X P(X) _0.1 0.2 (a) (b) (c) xxlda 2 3 What is the probability that X is not more than 1? What is the probability that X is at least 2? Compute E(x), the expected value of x. 0.4 0.3

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.4: Expected Value
Problem 1E: If a game gives payoffs of $10 and $100 with probabilities 0.9 and 0.1, respectively, then the...
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7. A discrete random variable, X, has the following probability distribution: (a) (b) (c) (d) (e) X 0 1 2 WN 3 P(X) 0.1 0.2 0.4 0.3 What is the probability that X is not more than 1? What is the probability that X is at least 2? Compute E(x), the expected value of x. Compute o², the variance of x. Compute σ, the standard deviation of x.
Transcribed Image Text:7. A discrete random variable, X, has the following probability distribution: (a) (b) (c) (d) (e) X 0 1 2 WN 3 P(X) 0.1 0.2 0.4 0.3 What is the probability that X is not more than 1? What is the probability that X is at least 2? Compute E(x), the expected value of x. Compute o², the variance of x. Compute σ, the standard deviation of x.
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  • Compute σ2, the variance of x.
  • Compute σ, the standard deviation of x.
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