If ‘A’ denotes the males of a town and ‘B’ denotes the females of that town, then A and B are:________?

x=40 is estimator of ________?

If p=0.6 and q=0.4 than shape of the binomial distribution?

If mean of the binomial probability distribution is 4.8, then variance of this distribution is :________?

Normal distribution is a probability distribution of ________ random variable?

suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be________?