An auditor desired to test credit approval on 10,000 sales invoices processed during the year. The auditor designed a statistical sample that would provide 1% risk of assessing control risk too low (99% confidence) that not more than 7% of the sales invoices lacked approval. The auditor estimated from previous experience that about 2.5% of the sales invoices lacked approval. A sample of 200 invoices was examined and 7 of them were lacking approval. The auditor then determined the upper deviation rate to be 8%.
The allowance for sampling risk was:
Choice 'b' is correct. The allowance for sampling risk is the excess of the 8% upper deviation rate over the 3.5% (= 7 200) sample deviation rate, or 4.5%.
Choices 'a', 'c', and 'd' are incorrect, based on the above Explanation: .
Willard
16 days ago