Simply enter the probability of observing an event outcome of interest success on a single trial eg. Binomial probability refers to the probability of exactly x successes on n repeated trials in an experiment which has two possible outcomes commonly called a binomial experiment. Formula for Binomial Distribution.
Using our example question n the number of randomly selected items is 9.
What is the q in this. This is the number of times the event will occur. The Calculator will compute Binomial and Cumulative Probabilities. P Three Heads P HHH 18 P Two Heads P HHT P HTH P THH 18 18 18 38 P One Head P HTT P THT P TTH 18 18 18 38 P Zero Heads P TTT 18.