Question

PLEASE HELP! Suppose Q and R are independent events. Find P(Q and R) if P(Q) = 4/7 and P(R) = 1/2

A. 2/7

B. 15/14

C. 5/7

D. 15/28

Answer 1

For indepent events Q and R, 

P(Q and R) = P(Q) * P(R). 

Thus, in this problem, 

P(Q and R) = P(Q) * P(R) = (4/7) * (1/2) = 4/14 = 2/7. 

So the answer is d