A binomial distribution is used to figure the probability of a pass or fail outcome in a survey, or an experiment that is replicated numerous times. There are only two potential outcomes for this ...

P. Vellaisamy, Abraham P. Punnen, On the Nature of the Binomial Distribution, Journal of Applied Probability, Vol. 38, No. 1 (Mar., 2001), pp. 36-44 Free online reading for over 10 million articles ...