If the coefficient of variation and standard deviation of a distribution are 2 and 0.4 respectively,then its mean is

If the coefficient of variation and standard deviation are 60 and 18 respectively, the arithmetic mean of distribution Is :

The mean and standard deviation of a binomial distribution are 12 and 2 respectively. What is the number of trials?

If coefficient of variation is 60 and standard deviation is 24, then arithmetic mean is :

The mean and standard deviation for a,b and 2 are 3 and 1 respectively,then value of ab is

The mean and standard deviation of a binomial variate X are 4 and 3 respectively. Then, P(Xge1) is equal to