There is a specific distribution called binomial distribution. The Binomial distribution is used when a probability of obtaining an outcome, out of two outcomes, on one trial is known and a probability of the number of times the same outcome might appear, say x times out of n independent trials is tried to be found. Mainly the binomial distribution is the sampling distribution of the proportions estimated from sample data. The binomial test tells us whether it is reasonable to conclude that the proportions we obtain from our sample could have been drawn from a population with a particular value of P.