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28 August, 15:17

Events A and B are independent. Find the missing probability.

P (B) = 9/20, P (A and B) = 9/100, P (A) = ?

answer in decimal form rounded to one decimal place

+5
Answers (2)
  1. 28 August, 17:40
    0
    Step-by-step explanation:

    events A and B are independent:

    P (A and B) = P (A) * P (B)

    9/100 = P (A) * 9/20

    P (A) = (9/100) / (9/20)

    P (A) = (9/100) * (20/9) = 180/900

    P (A) = 0.2
  2. 28 August, 18:01
    0
    Answer: P (A) = 0.2 : D
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