Question 1188898: 4. Compute the probability.
a. If P(A) = 0.2 , P(B)= 0.4, and P(A and B) = 0.1, find P(A or B)
b. If P(A) = 0.6, P(B)= 0.4, and P(A and B) = 0.2, find P(A or
c. If P(A) = 0.3, P(B)= 0.8, and P(A and B) = 0.9 find P(A or B)
d. If P(A) = 0.4, P(B)= 0.4, and P( A or B) = 0.4 find P(A and B)
e. lf P(A) = 0.7, P(A and B) = 0 4, and P( A or B)= 0.8, find P(B)
Answer by ikleyn(52879)   (Show Source):
You can put this solution on YOUR website! .
To solve all 5 problems from (a) to (e), use one general formula of the probability theory
P(A and B) = P(A) + P(B) - P(A and B).
When use it for each separate part, substitute all given relevant input values into the formula.
After that, find a single unknown value from the equation.
Happy solving (!)
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