CRITBINOM


Description Computes the smallest number of successes that will result in the cumulative BINOMDIST function giving an answer larger than a specified criteria value.

Syntax CRITBINOM (trials, probability, alpha)
Argument Description
trials An integer larger than 0 describing the total number of attempts in the test.
probability A value between 0 and 1 that represents the chance of success on an individual attempt. For example, the probability of heads in a coin toss is considered to be 0.6; the probability of getting "snake eyes" (two ones) when throwing a pair of dice is 1/36.
alpha A value between 0 and 1 that represents the overall criteria value. When the result of CRITBINOM is put into BINOMDIST, the value obtained from BINOMDIST will be equal to or larger than alpha.

Examples This function returns 492:

CRITBINOM(1000,0.5,0.3)

This function returns 500:

CRITBINOM(1000,0.5,0.5)

See Also BINOMDIST, COMBIN