Question
Mathematics Question on binomial distribution
The random valuable X follows binomial distribution B (n, p) for which the difference of the mean and the variance is 1. If 2P(X = 2) = 3P(X = 1), then n2P(X > 1) is equal to
A
15
B
16
C
12
D
11
Answer
11
Explanation
Solution
The correct answer is (D) : 11