Parameters for a Binomial Distribution

AP Statistics· difficulty 4/5

X ~ Binomial(n = 5, p = 0.5).

0 1 2 3 4 5 Bin(5, 0.5); X <= 1 shaded

What is P(X <= 1)?

  • A

    5/32

  • B

    16/32

  • C

    6/32

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  • D

    1/32

Explanation

P(X=0) = 1/32. P(X=1) = 5/32. Sum = 6/32.

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