In a binomial distribution, the sum of mean and variance is 15 and the product of mean and variance is 54, then the number of observations (n) is equal to
A. 27
B. 30
C. 24
D. 33
Answer:A
In a binomial distribution, the sum of mean and variance is 15 and the product of mean and variance is 54, then the number of observations (n) is equal to
A. 27 B. 30 C. 24 D. 33