espositoa2004 espositoa2004

10-05-2021
Mathematics

contestada

Find the missing probability
P(A)=.3 P(B).4 P(A or B) = ? P(A and B) = .2

Respuesta :

mhanifa mhanifa

10-05-2021

Answer:

0.5

Step-by-step explanation:

P(A) = 0.3
P(B) = 0.4
P(A ∪ B) = 0.2
P(A∩B) = x

Use below formula and find the missing probability:

P(A∪B) = P(A) + P(B) - P(A∩B)
0.2 = 0.3 + 0.4 - x
x = 0.7 - 0.2
x = 0.5

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