LCL = -0.0001 B. LCL = 0.0059 C. LCL = 0.0000 D. LCL = 0.0054

6.8 Use the given process data to construct a control chart for p. Data was collected for the number of violent crimes per 100,000 people in the United States of America for 15 consecutive years. Below is the data for those 15 consecutive years. Construct a p chart and answer the question below. Select the correct overall mean proportion.

730 758 758 747 714 685 637 611 568 523 507 505 474 476 486

A. 0.0101 B. 0.0057 C. 0.0500 D. 0.0061

6.10 Use the given process data to construct a control chart for p. A drugstore considers a wait of more than 5 minutes to be a defect. Each week 100 customers are randomly selected and timed at the checkout line. The numbers of defects for 20 consecutive weeks are given below. Select the correct overall mean proportion.

4 4 5 5 5 5 5 6 6 6 6 12 6 6 6 7 6 7 8 7

A. 0.060 B. 0.120 C. 0.061 D. 0.047