Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Mathematics Statistics Variance and Standard Deviation
If the mean of a binomial distribution is 12 and its standard deviation is 2, then the number of trials is :
1
18
2
14
3
24
4
More than one of the above
5
None of the above