C&A has inspected the number of defective cast iron molds in 5 random samples of 20 observations each. Following are the number of defective molds found in each sample:

Sample

1

2

3

4

5

# of defects

2

1

2

0

1

Which of the following formula for the UCL of the control chart with should be used?

where

and the total number of observation is 20.

and the sample size, n, is 5.

where

and the total number of observation is 5.

and the sample size, n, is 5.

where

and the total number of observation is 100.

and the sample size, n, is 20.

where

and the total number of observation is 100.

and the sample size, n, is 5.

Flag this Question Question 70.15ptsC&A has inspected the number of defective cast iron molds in 5 random samples of 20 observations each. Following are the number of defective molds found in each sample:

Sample

1

2

3

4

5

# of defects

2

1

2

0

1

Which of the following control chart with should be used?

P-chart with .22 andP-chart with .05 andP-chart with .61 andP-chart with .38 andC-chart with .49 and

Flag this Question Question 80.1pts Based on your answer in the question above, what conclusions can be drawn?The production process should be stopped.The process is in control.A different control chart should be used.The process is out of control.More observations should be made per sample.

Flag this Question Question 90.1ptsBased on the answer you have in question 7, if the next sample has 10 defects, what conclusions can be drawn?

The process is out of control.A new upper and lower control limits should be computed.Cannot be determined.The process is in control.A different control chart should be used.

Flag this Question Question 100.15ptsC&A wants to monitor the number of errors found in its invoices. An audit of 100 invoices per week over the past 6 weeks found the following number of errors:

Week

1

2

3

4

5

6

# of errors

2

1

2

0

1

3

Which of the following control chart with should be used?

C-chart with UCL = 5.17 and LCL = -2.17C-chart with UCL = 5.17 and LCL = 0None of the choices.P-chart with UCL = 0.16 and LCL = 0P-chart with UCL = 0.05 and LCL = 0

Flag this Question Question 110.1pts Based on your answer in the question above, what conclusions can be drawn?A different control chart should be used.The process is out of control.More observations should be made per sample.The production process should be stopped.The process is in control.

Flag this Question Question 120.1pts Based on the answer you have in question 10, if the next week has 10 errors, what conclusions can be drawn?The process is in control.A different control chart should be used.A new upper and lower control limits should be computed.The process is out of control.Cannot be determined.