1. What is meant by haphazard sample selection? Can it be used for statistical sampling? Explain why or why not. 2. Assume that you are auditing a random sample of 100 sales vouchers and find one...

1. What is meant by haphazard sample selection? Can it be used for statistical sampling? Explain why or why not.

2. Assume that you are auditing a random sample of 100 sales vouchers and find one improperly authorized error. The achieved upper limit of control failures is 4.7 percent at a

3. percent risk of assessing control risk too low. What does this achieved upper limit mean? How do you decide whether this result indicates that the control is working as expected?