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AP EAPCET (Engineering) Probability Distributions — practice questions

4 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.

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A game scores 1, 2 or 3 with chances 20%, 50% and 30%. What is the variance of the score?X is the score on a fair die. Find Var(X).X ~ B(4, p) and P(X = 0) = 16/81. Find p.X ~ B(6, p) with P(X = 2) = P(X = 4). Find p.