Melissa has been assigned to implement performance improvement procedures in her organization. She is in the final stage of the decision-making process. In order to make sure that the performance improvement procedures she implemented have been effective, she should ___.

A) analyze the performance improvement procedures
B) identify and define the factors affecting performance
C) generate and evaluate alternative course of action
D) choose a preferred course of action
E) evaluate the results

A retail store manager is trying to improve and control the rate at which cashiers sign customers up
for store credit cards. After posting a p-chart of the store's credit card sign-ups the manager takes
new samples of size 50 three weeks later. He finds that each sample of 50 contained 5 credit card
signups on average. Find p-bar and 99.73% control limits.