If X ~ B (n,p) such that 4P (X=4) =P(x=2) and n=6 . Find the distribution mean and standard deviation .

If X X-B(n,p)such that 4P(X=4)=P(X=2)and n=6 find distribution mean and standard deviation

If for distribution sum(x-7)=3 , sum(x-7)^(2)=57 and total number of item is 20 . Find the mean and standard deviation.

If for a distribution, sum (x-5)=3, sum (x-5)^(2)=43 and total number of observations is 18, find the mean and standard deviation.

A random variable X has binomial distribution with n=36 and p =0.8 then standard deviation of x is

A random variable X has binominal distribution with n = 25 and p = 0.8 then standard deviation of X is

If the mean and variance of a binomial distribution on are 9 and 6 i. i.. Find the distribution. ii. Find P( X ge 2 )

A random variable X has binomial distribution with n=25 and p=0.8 then standard deviation of X is ……………..

In a Binomial distribution if n = 5 and P(X=3) =2P (X=2) find p.

If ."""^(n + 2) P_(4) = 42 xx ."""^(n)P_(2) find n .