school
Acemy

The Geometric Distribution

AP Statistics· difficulty 3/5

X is Geometric with p = 0.2.

1 2 3 4 5 6 Geometric, p=0.2

What is P(X = 3) (first success on 3rd trial)?

  • A

    0.512

  • B

    0.200

  • C

    0.040

  • D

    0.128

    check_circle

Explanation

P(X=3) = (0.8)^2(0.2) = 0.64 * 0.2 = 0.128.

Want 10 more like this — adaptive to your weak spots?

Practice 10 like thisarrow_forwardPredict my AP score

Related questions

auto_awesomeAll Toolsquestion_answerHomework Q&Amenu_bookAP & SAT PreptimelineLearn Mode