1

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Variation due to inherent variability in the system of operation is called:

Select one:

A. Special or assignable causesB. Common or chance causesC. The standard deviationD. Explained variation

Question2

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The boundary points that define the acceptable values for an output variable are called:

Select one:

A. Capacity limitsB. Tolerance limitsC. Acceptable LimitsD. Control limits

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Which of the following is not part of the DMAIC process in Six Sigma management?

Select one:

A. DefineB. AnalyzeC. ControlD. Do

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A control chart that is used when the output of a production process is measured in terms of the percent defective is

Select one:

A. apchartB. anchartC. a process chartD. R chart

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If the lower-control limit of apchart is negative,

Select one:

A. A mistake has been made in the comoutationsB. Use the absolute value of the lower limitC. It is set to zeroD. None of the above

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A production process is considered in control if it processes at least 98.5% non-defective items. Samples of size 400 are used for the inspection process. Determine the upper and lower control limits for the P chart of defective elements.

Select one:

A. 0.00 - 0.0332B. -0.0032 - 0.0332C. 0.01 - 0.05D. 0.005 - 0.011

Question7

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A walk-in freezer thermostat at a restaurant is set at 5^oF. Because of the perish-ability of the food in the freezer, the restaurant's manager has decided to begin monitoring the temperature inside the freezer. In order to establish the centerline and control limits, the manager used a precision thermometer to take sample temperature readings at five randomly chosen times per day for 10 days. The data are presented below.

Day	Sample 1	Sample 2	Sample 3	Sample 4	Sample 5
1	5.22	5.29	5.11	4.95	4.78
2	4.40	4.41	4.63	6.03	4.83
3	5.11	5.43	4.90	4.55	5.23
4	5.65	4.24	5.09	4.82	5.50
5	4.68	5.92	4.71	4.67	4.75
6	5.01	5.26	6.10	5.20	5.25
7	5.20	4.99	5.15	5.96	5.35
8	4.30	4.91	5.03	4.97	4.80
9	5.45	5.62	6.11	5.13	4.90
10	5.06	5.13	4.95	5.59	5.80

Calculate the lower control limit for-chart.

Select one:

A. LCL = 4.6138B. LCL = 4.7981C. LCL = 4.3548D. LCL = 4.5148

Question8

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A walk-in freezer thermostat at a restaurant is set at 5^oF. Because of the perish-ability of the food in the freezer, the restaurant's manager has decided to begin monitoring the temperature inside the freezer. In order to establish the centerline and control limits, the manager used a precision thermometer to take sample temperature readings at five randomly chosen times per day for 10 days. The data are presented below.

Day	Sample 1	Sample 2	Sample 3	Sample 4	Sample 5
1	5.22	5.29	5.11	4.95	4.78
2	4.40	4.41	4.63	6.03	4.83
3	5.11	5.43	4.90	4.55	5.23
4	5.65	4.24	5.09	4.82	5.50
5	4.68	5.92	4.71	4.67	4.75
6	5.01	5.26	6.10	5.20	5.25
7	5.20	4.99	5.15	5.96	5.35
8	4.30	4.91	5.03	4.97	4.80
9	5.45	5.62	6.11	5.13	4.90
10	5.06	5.13	4.95	5.59	5.80

Calculate the upper control limit for-chart.

Select one:

A. UCL = 5.7300B. UCL = 5.8900C. UCL = 5.4467D. UCL = 5.6310

Question9

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A walk-in freezer thermostat at a restaurant is set at 5^oF. Because of the perish-ability of the food in the freezer, the restaurant's manager has decided to begin monitoring the temperature inside the freezer. In order to establish the centerline and control limits, the manager used a precision thermometer to take sample temperature readings at five randomly chosen times per day for 10 days. The data are presented below.

Day	Sample 1	Sample 2	Sample 3	Sample 4	Sample 5
1	5.22	5.29	5.11	4.95	4.78
2	4.40	4.41	4.63	6.03	4.83
3	5.11	5.43	4.90	4.55	5.23
4	5.65	4.24	5.09	4.82	5.50
5	4.68	5.92	4.71	4.67	4.75
6	5.01	5.26	6.10	5.20	5.25
7	5.20	4.99	5.15	5.96	5.35
8	4.30	4.91	5.03	4.97	4.80
9	5.45	5.62	6.11	5.13	4.90
10	5.06	5.13	4.95	5.59	5.80

Calculate the upper and lower control limits forR-chart.

Select one:

A. UCL = 2.114 and LCL = 0.00B. UCL = 0.00 and LCL = -2.114C. UCL=2.226 and LCL=0.00D. UCL = 0.00 and LCL = -2.226

Question10

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A walk-in freezer thermostat at a restaurant is set at 5^oF. Because of the perish-ability of the food in the freezer, the restaurant's manager has decided to begin monitoring the temperature inside the freezer. In order to establish the centerline and control limits, the manager used a precision thermometer to take sample temperature readings at five randomly chosen times per day for 10 days. The data are presented below.

Day	Sample 1	Sample 2	Sample 3	Sample 4	Sample 5
1	5.22	5.29	5.11	4.95	4.78
2	4.40	4.41	4.63	6.03	4.83
3	5.11	5.43	4.90	4.55	5.23
4	5.65	4.24	5.09	4.82	5.50
5	4.68	5.92	4.71	4.67	4.75
6	5.01	5.26	6.10	5.20	5.25
7	5.20	4.99	5.15	5.96	5.35
8	4.30	4.91	5.03	4.97	4.80
9	5.45	5.62	6.11	5.13	4.90
10	5.06	5.13	4.95	5.59	5.80

After plotting the- chart, is the process out of control?

Select one:

A. No. The process is in control.B. Yes. The process is out of control.C. Need more data to determine.D. May be. The data is inconclusive

Question11

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A walk-in freezer thermostat at a restaurant is set at 5^oF. Because of the perish-ability of the food in the freezer, the restaurant's manager has decided to begin monitoring the temperature inside the freezer. In order to establish the centerline and control limits, the manager used a precision thermometer to take sample temperature readings at five randomly chosen times per day for 10 days. The data are presented below.

Day	Sample 1	Sample 2	Sample 3	Sample 4	Sample 5
1	5.22	5.29	5.11	4.95	4.78
2	4.40	4.41	4.63	6.03	4.83
3	5.11	5.43	4.90	4.55	5.23
4	5.65	4.24	5.09	4.82	5.50
5	4.68	5.92	4.71	4.67	4.75
6	5.01	5.26	6.10	5.20	5.25
7	5.20	4.99	5.15	5.96	5.35
8	4.30	4.91	5.03	4.97	4.80
9	5.45	5.62	6.11	5.13	4.90
10	5.06	5.13	4.95	5.59	5.80

After plotting theR-chart, is the process out of control?

Select one:

A. Yes. The process is out of control.B. No. The process is in control.C. Need more data to determineD. May be. the data is inconclusive.

Question12

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A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a batch of light bulbs is too erratic. Accordingly, the analyst randomly surveys 10 production period each day for 14 days and records the sample mean and range for each day.

Mean (in minutes)	Range
58.5	5.1
47.6	7.8
64.3	6.1
60.6	5.7
63.7	6.2
57.5	6.0
55.0	5.4
54.9	6.1
55.0	5.9
62.7	5.0
61.9	7.1
60.0	6.5
58.3	5.9
52.0	5.2

Suppose the analyst constructs anR-chart to see if the variability in production times is in-control. What are the Lower and upper control limits for this chart?

Select one:

A. 1.968 - 10.032B. 0.456 - 11.544C. 1.338 - 10.662D. 0 - 11.544

Question13

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A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a batch of light bulbs is too erratic. Accordingly, the analyst randomly surveys 10 production period each day for 14 days and records the sample mean and range for each day.

Mean (in minutes)	Range
58.5	5.1
47.6	7.8
64.3	6.1
60.6	5.7
63.7	6.2
57.5	6.0
55.0	5.4
54.9	6.1
55.0	5.9
62.7	5.0
61.9	7.1
60.0	6.5
58.3	5.9
52.0	5.2

Suppose the analyst constructs an-chart to see if the production process is in-control. What are the Lower and upper control limits for this chart?

Select one:

A. 56.152 - 59.848B. 56.59 - 59.41C. 55.486 - 60.514D. 56.662 - 59.338

Question14

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A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a batch of light bulbs is too erratic. Accordingly, the analyst randomly surveys 10 production period each day for 14 days and records the sample mean and range for each day.

Mean (in minutes)	Range
58.5	5.1
47.6	7.8
64.3	6.1
60.6	5.7
63.7	6.2
57.5	6.0
55.0	5.4
54.9	6.1
55.0	5.9
62.7	5.0
61.9	7.1
60.0	6.5
58.3	5.9
52.0	5.2

After plotting the-chart andR-chart, is the process out of control?

Select one:

A. Yes. BecauseR-chart is out of control.B. No. It is in controlC. Yes. Because-chart is out of controlD. Yes. Because both charts are out of control

Question15

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A control chart in which one or more points fall outside the upper control limit suggests a process that appears to be operating in a state of statistical control

Select one:

TrueFalse

Question16

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The constants A₂, D₃and D₄can only be determined if the process standard deviation is given

Select one:

TrueFalse

Question17

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A local newspaper has 10 delivery boys who each deliver the morning paper to 50 customers every day. The owner decides to record the number of papers delivered on time for a 10-day period and constructs apchart to see whether the percentage is too erratic.

Day	Number of papers delivered on time
1	46
2	45
3	46
4	45
5	43
6	48
7	46
8	49
9	48
10	47

What is the numerical value of the lower control limit for thepchart?

Select one:

A. LCL = 0.5B. LCL = 0C. LCL = 0.815D. LCL = 0.920

Question18

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A local newspaper has 10 delivery boys who each deliver the morning paper to 50 customers every day. The owner decides to record the number of papers delivered on time for a 10-day period and constructs apchart to see whether the percentage is too erratic.

Day	Number of papers delivered on time
1	46
2	45
3	46
4	45
5	43
6	48
7	46
8	49
9	48
10	47

What is the numerical value of the upper control limit for thepchart?

Select one:

A.UCL = 1.000B.UCL = 1.037C.UCL = 0.979D.UCL = 0.926

Question19

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A local newspaper has 10 delivery boys who each deliver the morning paper to 50 customers every day. The owner decides to record the number of papers delivered on time for a 10-day period and constructs apchart to see whether the percentage is too erratic.

Day	Number of papers delivered on time
1	46
2	45
3	46
4	45
5	43
6	48
7	46
8	49
9	48
10	47

Plot thep-chart. What expression best characterizes thep-chart?

Select one:

A. CyclesB. Increasing tendC. in-controlD. individual outliers

Question20

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The principal focus of the control chart is the attempt to seperate special or assignable causes of variation from common causes of variation.

Select one:

TrueFalse