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21 April, 04:19

The weather forecast says the probability of it being cloudy tomorrow is 30%, the probability of it being rainy is 15%, and the probability of being cloudy and rainy is 14%. what is the probability of it being cloudy, if you it will be rainy?

a. about 21.43%

b. 46.67%

c. 4.5%

d. 93.3%

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Answers (1)
  1. 21 April, 07:54
    0
    Step-by-step explanation:

    This is a problem of conditional probability.

    Let events

    C=cloudy, P (C) = 0.30

    R=rainy., P (R) = 0.15

    C&R=cloudy and rainy, P (C&R) = 0.14

    We are asked the probability of being cloudy given that it will be rainy

    P (C|R) = P (C&R) / P (R) = 0.14/0.15 = 14/15 = 0.933 (to the thousandth)
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