Evaluate the appropriateness of Darrell's conclusions relating to the first two controls:
(a) Is it acceptable to use the same set of transactions and the same sample size to test two different controls?
(b) Do you agree with Darrell's conclusions with respect to these first two controls? If not, why not? In evaluating Darrell's conclusions, you may wish to refer to the attribute sampling evaluation table available in Appendix A.
(c) What additional work, if any, is necessary to support his assessment that both controls are operating effectively?