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soldi70 [24.7K]
3 years ago
5

Find the indicated probability.

Mathematics
1 answer:
Ksju [112]3 years ago
8 0

Answer:

P(B) = 0.55

Step-by-step explanation:

Given

P(A\ or\ B) = 0.8

P(A) = 0.4

P(A\ and\ B) = 0.15

Required

Find P(B)

In probability, we have:

P(A\ or\ B) = P(A) + P(B) - P(A\ sd B)

Substitute values

0.8 = 0.4 + P(B) - 0.15

Collect Like Terms

P(B) = 0.8 - 0.4 + 0.15

P(B) = 0.55

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