Let X be a random variable with three possible values: 5, 10, and 200. If P(5) = 0.7 and P(10) = 0.17. What is P(200), the expected value of X, μX, and the variance, σ2X?
Added by Angela G.
Step 1
Probability of X = 200: We know that the sum of probabilities of all possible values of X must be equal to 1. Therefore, P(200) = 1 - P(5) - P(10) = 1 - 0.7 - 0.17 = 0.13. Show more…
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