if X is a binomial random variable with n = 20, and p = 0.5, then Select one: a. P(X = 20) = P(19 ≤ X ≤ 21) b. P(X = 20) = 1.0 c. P(X = 20) = 1 – P(X ≤ 20) d. P(X = 20) = 1 – P(X ≥ 0) e. None of the suggested answers are correct
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