The Internal Auditor for Your Company Believes That 10 Percent

Multiple Choice

The internal auditor for your company believes that 10 percent of your invoices contain errors. To check this theory, 20 invoices are randomly selected, and 5 are found to have errors. What is the probability that of the 20 invoices selected, 5 or more would contain errors if the theory is valid?

A) .0433
B) .0319
C) .9567
D) .8660