Determine P(B|A)

aburchett

New member
Joined
Jan 19, 2011
Messages
48
Given that P(A) = 0.5 and P(B) = 0.3, and P(A and B) = 0.21, determine P(B|A).

My work:
P(B|A)=P(A?B)/P(A)
= 0.21/.5
=.42

Is this correct?
 

tkhunny

Moderator
Staff member
Joined
Apr 12, 2005
Messages
9,832
Looks like it to me. You need a hat full of colored socks to test out your conjectures.
 
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