• Given:

You need to find this probability:

The Binomial Distribution Formula is:

Where "n" is the number of trials, "x" is the number of successes desired, and "p" is the probability of getting a success in one trial.
In this case you know that:

Therefore, by substituting values into the formula and evaluating, you get:



• Given that:

You need to find:

In this case:

Therefore, using the same formula, you get:



• Given:

You need to find:

This is:

Therefore, using the formula, set up:

Then, you get:

Hence, the answers are:


