In a Binomial distribution, the mean is and variance is . Then, parameter is
Explanation for the correct option.
Find the value of the parameter .
In a binomial distribution, is the number of trials, is the probability of success, and is the probability of failure.
The mean is given by the term . It is given that mean is , so .
The variance is given by the term . It is given that the variance is , so .
Divide equation by equation .
It is known that , so the value of is:
Now find the value of by substituting for in the equation .
So the value of parameter is .
Hence, the correct option is C.