Let X denote the number of times 'a total of 9' appears in two throws of a pair of dice. Find the probability distribution of X. Also, find the mean, variance and standard deviation of X.

A coin is tossed 4 times. Let X denote the number of heads. Find the probability distribution of X. Also, find the mean and variance of X.

A coin is tossed 4 times let x denote the number of heads find the probability distribution of X also find the mean and variance of X

Let x denote the sum of digits in the random experiement of throwing two balacned dice find the probability distribution of the random variable x

Find the probability distribution of the doublets in two throws of a pair of dice.

Find the probability distribution of number of doublets in 2 throws a pair of dice.

A coin is tossed 4 times. Let X denote the number of heads. Find the probability distribution of X, its mean and variance.

Three numbers are selected at random (without replacement) from first 6 positive integers. Let X denote the largest of the three numbers obtained. Find the probability distribution of X. Also, find the mean and variance of the distribution.

Find the probability distribution of the number of doubles in throw of a pair of dice.