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Parameters for a Binomial Distribution

AP Statistics· difficulty 3/5

X ~ Binomial(n=4, p=0.5).

0 1 2 3 4 Binomial(4, 0.5)

What is P(X >= 3)?

  • A

    1/16

  • B

    4/16

  • C

    5/16

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  • D

    10/16

Explanation

P(X=3) = C(4,3)(0.5)^4 = 4/16. P(X=4) = 1/16. Sum = 5/16.

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