Compute Sample Size The list below indicates the control activities tested using voucher packets in Part A (Part A was a Chapter 6 assignment, but you can complete this assignment even if you did not complete Part A). Use the information provided below to calculate the sample size using IDEA. Please refer to Chapter 8 of the textbook for instructions on how to use IDEA to calculate sample sizes. When different sample sizes are computed for control activities that will be tested concurrently, it is common to use the largest sample size computed for testing all control activities (See Chapter 8 for a more detailed description).

Work Paper 8-1

Description of Control Activities	Desired Confidence Level	Population	Tolerable Deviation Rate (%)	Expected Population Deviation Rate (%)	Sample Size
1. Document packet includes all documents appropriate for the transaction.	90%	2,147	5%	1%
2. The Purchase Requisition is signed by a supervisor.	90%	2,147	10%	4%
3. The Purchase Order is signed by an authorized purchasing agent.	90%	2,147	10%	1%
4. Quantities on vendor's invoice agree with related receiving report and purchase order, and invoice is mathematically correct.	90%	2,147	5%	1%
5. All documents in voucher packet have been stamped "paid".	90%	2,147	10%	1%
Sample Size Used