biPDf (Function)
Command last updated 4/7/2022.
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biPDf(x, n, p)
- x is the query integer
- n is the number of trials
- p is the probability of success each trial
Equivalent to the builtin binomialPDf(x, n, p), but returns exact values in Standard mode whereas binomialPDf can return only decimal answers.
Returns the probability of x successes from n trials with p probability of success each trial.
Example
A box contains \(n\) green balls and \(m\) red balls. A ball is selected at random, then replaced in the box. Find the probability that in 8 such selections a green ball is selected at least once. (2023 Methods Exam 2 Section A Question 8)
