CRITBINOM function

Returns the smallest value for which the cumulative binomial distribution is less than or equal to a criterion value


 * If any argument is nonnumeric, CRITBINOM returns the #VALUE! error value
 * If trials is not an integer, it is truncated
 * If trials < 0, CRITBINOM returns the #NUM! error value
 * If probability of success is 1, CRITBINOM returns the #NUM! error value
 * If criteria 1, CRITBINOM returns the #NUM! error value.