biCDf (Function)
Command last updated 4/7/2022.
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biCDf(l, u, n, p)
- l is the query lower boundary
- u is the query upper boundary
- n is the number of trials
- p is the probability of success each trial
l and u should evaluate to numbers, not expressions in terms of unknown variables. Prefer to use discrete if it would be more appropriate.
Equivalent to the builtin binomialCDf(l, u, n, p), but returns exact values in Standard mode whereas binomialCDf can return only decimal answers.
Returns the probability of between and including l and u successes from n trials with p probability of success each trial.
Example
Let \(X \sim \mathrm{Bi}(7, p)\). Find \(\mathrm{Pr}(2 \leq X \leq 3)\) as a polynomial in terms of \(p\). (2017 Methods Exam 2 Section B Question 3f)
