A die is rolled 20 times . Getting a number greater than 4 is a success.
Find the mean and variance of the number of successes .

A die is thrown 20 times. Getting a number greater than 4 is considered a success. Find the mean and variance of the number of successes.

A die is thrown 20 times. Getting a number greater than 4 is considered a success. Find the mean and variance of the number of successes.

A die is thrown 15 times. Getting a number greater than 5 is a success.Find the mean and variance of the number of successes ?

A die is thrown 20 times and getting a number 'greater than 4' is considered a success. Find the mean and the variance of the number of successes.

A die is rolled twice. Getting a number greater than 4 is called a 'Success'. Let the random variable X is equal to the number of successes then mean of X is

A die is tossed twice. 'Getting a number greater than 4' is considered a success. Find the probability distribution of number of successes. Also, find the mean and variance of the number of successes.

A die is thrown 100 times. Getting an even number is considered a successes. Find the mean and variance of successes.

A pair of dice is thrown 200 times. If getting a sum of 9 is considered a success, find the mean and the variance of the number of success.