In eight thows of a die `1 or 3` is considered a success. Then, the standard deviation of success, is

In eight throws of a die, 1 or 3 is considered a success. Then the mean number of success is

In eight throws of a die 5 or 6 is considered a success, find the mean number of successes and the standard deviation.

In eight throws of a die 5 or 6 is considered a success,find the mean number of successes and the standard deviation.

In 12 throw of a die getting 2 or 4 is considered as success then the mean number of success is

A die is thrown 100 times.If getting an even number is considered a success,then the standard deviation of the number of successes is…..

A coin is thrown 10 times and getting a head is considered a success. Find the mean and the standard deviation of the number of success.

If turning up 1 or 3 is considered a success , then the S.D of number of successes in 8 throws is