Q. 15 Suppose that a shop has an equal number of LED bulbs of two different types. The probability of an LED bulb lasting more than 100 hours given that it is of Type 1 is 0.7, and given that it is of Type 2 is 0.4. The probability that an LED bulb chosen uniformly at random lasts more than 100 hours is :
(A) 0.55
(B) 0.7
(C) 0.4
(D) 0.35
Answer: (A)
Explanation:
