1. The Trial: it should only have two outcomes, such as heads or tails, would I make it to work on time or not, or students who pass or fail Math 2, etc. Also need to decide how many trials you would do.
2. The Theoretical Percentage of Success: you may not know this, so give me a good, educated guess.
3. Whats the probability of x happening?

Now calculate the mean, the standard deviation, and the probability for one example of x

My example

The Trial:Finding a parking spot in Ontario Mills (a mall) right in front of the theater on a Sunday. Im going there 5 times.

The Theoretical Percentage of Success:40% (could be lower actually)

Whats the percentage of success all 5 times? From Table A-1, n=5 (total trials), p=0.4 (theoretical probability), x=5 (how many times I want to see it happen), the probability is 0.01