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Crazy boy [7]
3 years ago
9

For the month of March in a certain city, 57% of the days are cloudy. Also in the month of March in the same city, 55% of the da

ys are cloudy and rainy. What is the probability that a randomly selected day in March will be rainy if it is cloudy?
Mathematics
1 answer:
oksian1 [2.3K]3 years ago
4 0

Answer: 0.9649

Step-by-step explanation:

Let A denote the event that the days are cloudy and B denotes the event that the days are rainy.

Given : For the month of March in a certain city, the probability that days are cloudy :P(A)=0.57

Also in the month of March in the same city,, the probability that the days are cloudy and rainy :P(A\cap B)=0.55

Now by using the conditional probability, the probability that a randomly selected day in March will be rainy if it is cloudy will be :-

P(B|A)=\dfrac{P(A\cap B)}{P(A)}

\Rightarrow\ P(B|A)=\dfrac{0.55}{0.57}\\\\=0.964912280702\approx0.9649\ \ \text{[Rounded to four decimal places.]}

Hence, the probability that a randomly selected day in March will be rainy if it is cloudy = 0.9649

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