For X Binomial(10, 0.5), P(X ≤ 5) is

Slightly more than 0.5 By symmetry P(X ≤ 5) = P(X = 5) + P(X < 5) 0.5 (because P(X = 5) is added).

Introduction to the Binomial Distribution

AP Statistics· difficulty 4/5

For X ~ Binomial(10, 0.5), P(X \leq 5) is

Explanation

By symmetry P(X \leq 5) = P(X = 5) + P(X < 5) > 0.5 (because P(X = 5) is added).

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