Let X represent the number of heads seen in two tosses of a fair coin. The probability function for this random variable is summarized in the provided table. x 0 1 2 p(x) 0.25 0.50 0.25 Round all answers to three decimal places unless otherwise specified. Show your work for each question below. 7. (2pts) Find P(X > 0). 8. (4pts) Compute the mean number of heads seen in two tosses of a fair coin. 9. (4pts) Compute the standard deviation of the number of heads seen in two tosses of a fair coin.
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(2pts) Find P(X > 0). P(X > 0) = P(X = 1) + P(X = 2) = 0.50 + 0.25 = 0.75 Show more…
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