question_answer

A random variable X has the probability distribution

X	1	2	3	4	5	6	7	8
P(X)	0.15	0.23	0.12	0.10	0.20	0.08	0.07	0.05

For the events E = {X is a prime number} and     \[F=\{X<4\},\]then probability of \[P(E\cup F)\] is

A)  0.87                            

B)  0.77

C)  0.35                            

D)  0.50

E)  None of these