SOLUTION: Suppose that A and B are independent events such that P(A with a bar on top)= 0.40 and P(B) = 0.20. Find P(A upside down u B) and P(AuB).

Algebra ->  Probability-and-statistics -> SOLUTION: Suppose that A and B are independent events such that P(A with a bar on top)= 0.40 and P(B) = 0.20. Find P(A upside down u B) and P(AuB).       Log On


   

Question 392028: Suppose that A and B are independent events such that P(A with a bar on top)= 0.40 and P(B) = 0.20.

Find P(A upside down u B) and P(AuB).
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Suppose that A and B are independent events such that P(A with a bar on top)= 0.40 and P(B) = 0.20.
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Comment: I'm assuming you "A with a bar on top" is the complement of A.
Since P(A') is 0.6, P(A) = 0.4
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Find P(A upside down u B) and P(AuB).
P(A and B) = P(A)*P(B) = 0.4*0.4 = 0.16
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P(A U B) = P(A) + P(B) - P(A and B)
= 0.4+0.2-0.16
= 0.44
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Cheers,
Stan H.
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