Expert Answers

Question 1
The quality management points of Deming:
A. emphasized that quality originates from improving the process, not from inspection.
B. identified production quotas and merit systems as crucial to quality improvement.
C. identify education and training for both workers and managers as crucial to process improvement.
D. Both A and C

Question 2
An error in a training tape results in machine operators overadjusting a tooling machine on a regular basis. The resultant unacceptable output is an example of:
A. chance variation.
B. assignable variation.
C. variable out of control.
D. attribute out of control.

Question 3
A Pareto chart:
A. employs the 80-20 rule to rank defects in the order that they should be addressed.
B. tallies the number and type of defects that happen within a product or service.
C. is a tool that helps to organize ideas and identify relationships.
D. Both A and B

Question 4
A(n) __________ chart is based on actual measurements.
A. Pareto
B. cause-and-effect
C. variable control
D. attribute

Question 5
Answer questions 5 – 7 using the following information:
Samples of size 5 are drawn from 10 separate production runs to measure data on a product average:
Sample
Run12345
59745348652425170476735242538785435706244795345939786166680546852774434565498755368503194865704152104338101947
This data will be mapped using a(n):
A. attribute control chart.
B. range chart
C. mean chart.
D. percent defective chart.

Question 6
The lower control limit for the chart is:
A. 19.64.
B. 34.66.
C. 50.08.
D. 54.56.

Question 7
range chart for the data will have upper and lower limits of:
A. 20.48; 0.00.
B. 50.52; 20.48.
C. 75.08; 0.00.
D. 75.08; -20.04.

Question 8
The upper and lower control limits are usually set at:
A. the mean.
B. above the mean.
C. ±3 standard deviations from the mean.
D. ±2 standard deviations from the mean.

Question 9
Answer questions 9 – 10 using the following information:
20 samples of fifty pipe rivets each were drawn from a production line. The number of defective items per sample was:
1, 2, 5, 2, 0, 2, 1, 1, 0, 1, 0, 1, 1, 0, 5, 0, 0, 6, 3, 1
For this data set, p=
A. 0.0128.
B. 0.02.
C. 0.031.
D. 0.032.

Question 10
The upper and lower control limits, respectively, are:
A. 0.1045 and -0.0425.
B. 0.1045 and 0.00.
C. 0.0735 and 0.02.
D. 0.1067 and 0.00.

Question 11
A chart which illustrates weak areas in a construction process is termed a(n):
A. mean chart.
B. range chart
C. percent defective chart.
D. c-bar chart.

Question 12
If the item recorded is a fraction of unacceptable parts made in a batch of larger parts, the appropriate control chart is the:
A. mean chart.
B. range chart
C. percent defective chart.
D. c-bar chart.

Question 13
Acceptance sampling:
A. is often employed because 100% inspection is rarely feasible.
B. screens out lots of incoming products that are unacceptable.
C. will accept an incoming lot if n > c.
D. Both A and B

Question 14
An inspector determines that 0.05% of a lot of 400 items are defective. The actual number of defective items is 6. The critical number is 4. This is an example of:
A. faulty sampling.
B. a type II error.
C. producer’s risk.
D. consumer’s risk.

Question 15
The probability that a firm accepts a lot which is 20% defective using a sample size of 14 and an acceptance number of 3 is:
A. 0.044.
B. 0.956.
C. 0.842.
D. 0.698.

Question 16
What is the process by which a company can insure that a quality product or service is being produced?
A. SPC
B. Pareto
C. Fishbone
D. Diagnostic chart

Question 17
The technique that tallies numbers and types of defects is called:
A. range charts.
B. Pareto charts.
C. control charts.
D. fishbone diagram.

Question 18
The cause-and-effect chart is an example of:
A. range charts.
B. Pareto charts.
C. control charts.
D. fishbone diagrams.

Question 19
A sampling plan states that if 20 incoming transistors are checked and 2 or less defects are found that the lot is accepted. If an incoming lot is 10 percent defective, what is the probability of accepting the lot of transistors?
A. 0
B. 1
C. 0.037
D. 0.667

Question 20
Cappelli Inc. designs and manufactures women’s apparel using material from various mills. Their acceptance sampling plan states that 20 two-inch squares of the incoming material must be carefully checked. If 3 or less squares reveal imperfections, the lot is accepted. What is the probability that an incoming lot from Blufton Mills that contains 40 percent imperfect cloth will be accepted?
A. 0
B. 0.239
C. 0.015
D. 0.0024