SOLUTION: A and B are two disjoint events. If P(A) = 0.5, and P(B) = 0.4, then P(A AND B) is: Please show work. (a) 0.9 (b) 0.2 (c) 0 (d) cannot be determined

Algebra ->  Probability-and-statistics -> SOLUTION: A and B are two disjoint events. If P(A) = 0.5, and P(B) = 0.4, then P(A AND B) is: Please show work. (a) 0.9 (b) 0.2 (c) 0 (d) cannot be determined       Log On


   

Question 1029293: A and B are two disjoint events. If P(A) = 0.5, and P(B) = 0.4, then P(A AND B) is:
Please show work.
(a) 0.9
(b) 0.2
(c) 0
(d) cannot be determined
Found 2 solutions by Edwin McCravy, Boreal:
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
Since they are disjoint, it is impossible for 
both A and B to occur. 
Therefore, P(A AND B) = 0

Edwin

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Disjoint are mutually exclusive. Therefore, they cannot both occur at the same time. The probability is 0 or c.