Question
Question: If P(1) = 0.4, P(2) = x, & P(A Č B)= 0.7 and the event A & B are mutually exclusive then x =...
If P(1) = 0.4, P(2) = x, & P(A Č B)= 0.7 and the event A & B are mutually exclusive then x =
A
3/10
B
½
C
2/5
D
1/5
Answer
3/10
Explanation
Solution
P (A Č B) = P(1) + P(2) 0.7 = 0.4 + x
x = 0.3 = 3/10