Pascal Command
 Pascal( <n>, <p> )

Returns a bar graph of a Pascal distribution.
The Pascal distribution models the number of failures before the nth success in repeated mutually independent Bernoulli trials, each with probability of success p.
 Pascal( <n>, <p>, <Boolean Cumulative> )

Returns a bar graph of a Pascal distribution when Cumulative = false. Returns a graph of a cumulative Pascal distribution when Cumulative = true. First two parameters are same as above.
 Pascal( <n>, <p>, <Variable Value>, <Boolean Cumulative> )

Let X be a Pascal random variable and v the variable value. Returns P( X = v) when Cumulative = false. Returns P( X ≤ v) when Cumulative = true. First two parameters are same as above.
If the number of independent Bernoulli trials that must be successful is n = 1, the probability of success in one trial is p = \(\frac{1}{6}\), then the probability of 2 failures before the success is given by
Pascal(1, 1/6, 2, false)
which yields 0.12 in the Algebra View and 25/216 in the
CAS View.
This command also works in the CAS View. 