The Probability application allows for easy probability computations directly in your iPhone or iPod Touch.
If you enter the number of trials and the probability of success for a given trial the application will compute the likelihood of observing a certain number of successful outcomes.
Example application: Assume that the probability of converting a sales call to a successful sale is 50 %. If ten sales calls are made, what is the probability of obtaining only four or less conversions from these ten calls? The Probability application gives you the answer (37.7 %).