Question 1 of 17
At a Six Sigma quality level, if the process mean isheld exactly on target, the expected result would be:
A. 1.5 defects per thousand opportunities.
B. 2.8 defects per ten thousand opportunities.
C. 3.4 defects per million opportunities.
D. 2.0 defects per billion opportunities.
Question 2 of 17
A grocery store finds that a patron typicallypurchases 20 items per visit. In one day, the grocer found that the checkoutscanners made 240 price-reading errors in servicing 11,000 patrons. The dpmo is_____.
A. 0.022
B. 45.83
C. 1091
D. 1818
Question 3 of 17
Which of the following constitutes an operationaldefinition of a service quality measure?
A. Highlyprofessional service
B. Few latedeliveries
C. Phone calls answered within two rings
D. Very accurate customer billing
Question 4 of17
A level of 3.4 defects per million opportunities canbe achieved in all of the following ways EXCEPT:
A. with 0.0-sigma off-centering and 4.0-sigma quality.
B. with 0.5-sigma off-centering and 5.0-sigma quality.
C. with 1.0-sigma off-centering and 5.5-sigma quality.
D. with 1.5-sigma off-centering and 6.0-sigma quality.
Question 5 of 17
A _____ is a _____ of the data from the largestfrequency to the smallest.
A. histogram; scatter diagram
B. pareto diagram; histogram
C. scatter diagram; break-down chart
D. check sheet; chronological chart
Question 6 of 17
Control limits relate to _____, while specificationlimits relate to individual measurements.
A. values within the upper and lower control limits
B. total values in the range
C. median values
D. averages of samples
Question 7 of 17
A manager at a canning company wants to monitor thenumber of orange
juice cans it produces each day that are beyond theupper specification
limit for can diameter. Each day an employee willrandomly select 150
cans and then determine and plot the number of cansthat are beyond the
upper specification limit for can diameter. Theappropriate control
chart is a(n):
A. -chart.
B. R-chart.
C. p-chart.
D. np-chart.
Question 8 of 17
A run of __________ consecutive points on the sameside of the center line is evidence that the mean has shifted.
A. four
B. five
C. six
D. seven
E. eight
Question 9 of 17
Which of the following would be used to monitor thenumber of nonconforming items?
A. np-chart
B. p-chart
C. u-chart
D. n-chart
Question 10 of 17
Which of the following charts is used to monitor theaverage number of defects per unit when subgroup sizes vary?
A. s-chart
B. c-chart
C. p-chart
D. u-chart
Question 11 of 17
If the sample size in a p-chart increases from 100 to120, the upper and lower control limits will
A. move farther apart away from the center line
B. move closer together toward the center line
C. remain the same distance from each other
D. both shift upward with the upper control limitmoving further from the center line and the lower control limit moving closerto the center line
Question 12 of 17
Five samples of size 20 were collected for a variablemeasurement. All sample data were greater than or equal to 3.0. The samplemeans and sample ranges are provided in the following table.
|
sample number
|
1
|
2
|
3
|
4
|
5
|
|
sample mean
|
5.0
|
4.9
|
5.0
|
6.0
|
5.2
|
|
sample range
|
0.2
|
4.9
|
0.1
|
0.0
|
0.3
|
The values of which sample are identical?
A. sample 1
B. sample 2
C. sample 3
D. sample 4
E. sample 5
Question 13 of 17
Twenty samples of size 50 were taken from a process.The total number of defectives found was 86. The standard deviation for thenumber of nonconforming items for an np-chart is:
A. 0.0396
B. 1.2538
C. 1.9825
D. 2.0736
E. 3.9302
Question 14 of 17
The Chair of the Management Department at UB wants toconstruct a p-chart for determining whether the four (4) faculty membersteaching the course are under control with regards to the number of studentswho fail in the course. Accordingly, the Chair sampled 100 final grades fromlast year for each instructor, and computed the proportion of failures perinstructor as 0.03, 0.02, 0, and 0.03 respectively. The three sigma uppercontrol limit (UCL) would be
A. 0.95
B. 0.062
C. 0.0388
D. 0.140
E. None of the above
Question 15 of 17
The control limits for a c-chart are:
Upper Control Limit = 10.00
Center Line = 4.00
Lower Control Limit = 0.00
Determine thenumber of samples used to construct this chart.
A. 2
B. 4
C. 10
D. 16
E. Cannot be determined based on the informationpresented.
Question 16 of 17
Twenty-five circuit boards were inspected to determinethe total number of defects per unit. The total number of defects found was225. The standard deviation for use in designing the control limits for thec-chart is:
A. 3
B. 5
C. 9
D. 15
E. none of the above
Question 17 of 17
A machined part has a lower tolerance limit of 4.1inches and an upper tolerance limit of 4.9 inches. The range for thepre-control green zone is:
A. 4.1 to 4.9 inches.
B. 4.3 inches to 4.7 inches
C. 4.0 inches to 5.0 inches
D. less than 4.1 inches.
E. 4.5 inches to 4.9 inches.