Maths

The probability that I have to wait at the traffic lights on my way to school is 0.45. Find the probability that on 3 consecutive mornings I have to wait:

A) Once

B) Twice

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asked by Cj
  1. A) prob(waiting once out of 3)
    = C(3,1)(.45)(.55^2)

    B) Prob(waiting twice of 3 days)
    = C(3,2) (.45^2)(.55)
    = ...

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    posted by Reiny

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