A company that operates a production line that fills 16 ounce boxes of pasta shells uses a quality assurance process that involves randomly selecting and weighing four boxes every hour The sample data collected during a particular eight hour shift is as follows Box No Hour No 1 2 3 4 1 15 97 16 00 16 01 16 02 2 16 13 16 12 16 15 16 12 3 15 98 15 92 15 95 15 96 4 15 85 16 00 15 98 16 15 5 15 99 15 98 16 07 16 00 6 15 97 16 10 16 04 16 02 7 16 01 15 92 16 03 16 05 8 16 00 15 97 16 03 15 98 What are the values for the lower and upper controls limit for x bar using a 99 7 level of confidence Prepare an x bar chart that reflects upper and lower control limits for x bar, x double bar, and x bar for each hour Based upon the x bar chart, for what specific hours was x bar outside the control limits during the eight hour period What are the values for the lower and upper controls limit for R using a 99 7 level of confidence Prepare a R chart that reflects the upper and lower control limits for R, R bar, and R for each hour Based upon the R chart, for what specific hours was R outside the control limits during the eight hour period The manager of a local bank perceives that there has been an increase in the incidence of customers complaints regarding excessive waiting times at the drive thru teller window The manager surveyed twenty randomly selected drive thru teller window customers daily for a period of fourteen days The number of customers who indicated they had experienced excessive waiting times was as follows Each instance of a customer indicating they had experienced an excessive waiting time constitutes a defect Day No No Complaints 1 2 2 3 3 7 4 2 5 2 6 8 7 8 8 7 9 8 10 2 11 2 12 6 13 2 14 2 What are the values for the lower and upper controls limit for the percent defects using a 95 5 level of confidence Prepare a p chart that reflects the upper and lower control limits for p, p bar, and p for each day Based upon the p chart, for what specific days was the percent defective outside the control limits during the fourteen day period

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A company that operates a production line that fills 16 ounce boxes of pasta shells uses a quality assurance process that involves randomly selecting and

A company that operates a production line that fills 16 ounce boxes of pasta shells uses a quality assurance process that involves randomly selecting and weighing four boxes every hour. The sample data collected during a particular eight-hour shift is as follows:

	Box No.
Hour No.	1	2	3	4
1	15.97	16.00	16.01	16.02
2	16.13	16.12	16.15	16.12
3	15.98	15.92	15.95	15.96
4	15.85	16.00	15.98	16.15
5	15.99	15.98	16.07	16.00
6	15.97	16.10	16.04	16.02
7	16.01	15.92	16.03	16.05
8	16.00	15.97	16.03	15.98

1. What are the values for the lower and upper controls limit for x-bar using a 99.7% level of confidence?
2. Prepare an x-bar chart that reflects upper and lower control limits for x-bar, x-double bar, and x-bar for each hour. Based upon the x-bar chart, for what specific hours was x-bar outside the control limits during the eight-hour period?
3. What are the values for the lower and upper controls limit for R using a 99.7% level of confidence?
4. Prepare a R chart that reflects the upper and lower control limits for R, R-bar, and R for each hour. Based upon the R chart, for what specific hours was R outside the control limits during the eight-hour period?

The manager of a local bank perceives that there has been an increase in the incidence of customers complaints regarding excessive waiting times at the drive-thru teller window. The manager surveyed twenty randomly selected drive-thru teller window customers daily for a period of fourteen days. The number of customers who indicated they had experienced excessive waiting times was as follows. Each instance of a customer indicating they had experienced an excessive waiting time constitutes a defect.

Day No.	No. Complaints
1	2
2	3
3	7
4	2
5	2
6	8
7	8
8	7
9	8
10	2
11	2
12	6
13	2
14	2

What are the values for the lower and upper controls limit for the percent defects using a 95.5% level of confidence?

Prepare a p-chart that reflects the upper and lower control limits for p, p-bar, and p for each day. Based upon the p-chart, for what specific days was the percent defective outside the control limits during the fourteen-day period?