The mean and the variance of a binomial distribution are 4 and 2 respectively. Then the probability of 2 successes is
A. √50
B. 5
C. 25
D. 10
Answer:B
The mean and the variance of a binomial distribution are 4 and 2 respectively. Then the probability of 2 successes is
A. √50 B. 5 C. 25 D. 10