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 random experiment consists of three independent tosses of a fair coin write down the sample space let x be the number of heads obtained obtain the probability distribution of x and calcualte its expectation and variance

In a box there are 5 watches of which 2 are known to be defective two watches are taken out at random let x denote the number of defective watches selected obtain the probability distribution of x also calcuated mean of x

Let x denote the number of heads when 10 unbiased coins are tossed find the probability distribution of x

Four unbiased coins are tossed simultaneously let x be the random variabvel denoting the number of heads obtained obtain the probability distribution of x find E(x) and var(x) [symvbols have their usual meaning]

A coin is tossed n times. Find the probability of odd numbers of heads.

If X follows a binomial distribution with mean 4 and variance 2, find P(Xge5) .

A balanced coin is tossed repeatedly until a tail appears if x denotes the number of heads preceding the first tail find the probability distribution of x

A coin is tossed 2n times. The probability of getting head n times, is -

Find the binomial distribution for which the mean and variance are 12 and 4 respectively.

An unbiased coin is tossed two times. Write down the sample space. Hence , find the probability of getting exactly one head.