Posted by Anonymous on Tuesday, July 24, 2012 at 4:12pm.
Consider the sample space S = {1, 2, 3, . . ., 10}. Let A = all odd numbers in S. Let B = all multiples of 5 in S. Compute P(B  A). Enter your answer as a fraction using the "/" and do not include spaces in your answer.

algebra**  MathMate, Wednesday, July 25, 2012 at 12:05am
A={1,3,5,7,9}
B={5,10}
A∩B={5}
Assuming random sampling,
P(B)=B/S=2/10=1/5
P(A)=A/S=5/10=1/2
P(A∩B)=1/10
Finally,
P(BA)=P(B∩A)/P(A) (by definition)
I'll let you take it from here.
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