If X is the number on the die , when a die is rolled, then mean and standard deviation are

Let X denote the sum of the numbers obtained when two fair dice are rolled. Find the variance and standard deviation of X.

List the outcomes when: a die is rolled.

When a die is rolled, then match the following

The numer of elements in a sample space, when a die rolled are:

An experiment consists of rolling a die and then tossing a coin once, if the number on the die is even. If the number on the die is odd the coin is tossed twice. Write the sample space for this experiment.

An experiment consists of rolling a die and then tossing a coin if the number on the die is even. If the number on the die is odd, the coin is tossed twice. Write the sample space for this experiment.