Question

In a class, 40% of the students study math and science. 60% of the students study math. What is the probability of a student studying science given he/she is already studying math? 

(a) 0.34 

(b) 0.53 

(c) 0.67 

(d) 0.74

Answer 1

Correct option c. (0.67)

Explanation:

P(M and S) = 0.40 

P(M) = 0.60 

P(S|M) = P(M and S)/P(M) = 0.40/0.60 = 2/3 = 0.67