Fifty employee travel expense reimbursement vouchers were led last quarter in the finance department at Ramjac Corporation. Of these, 20 contained errors. A corporate auditor inspects five vouchers at random. Let X be the number of incorrect vouchers in the sample.
(a) Use Excel to calculate the entire hypergeometric probability distribution.
(b) Find P(X = 0).
(c) Find P(X = 1).
(d) Find P(X ≥ 3).
(e) Make an Excel graph of the PDF of the hypergeometric distribution and describe its appearance.