Question 1

A Cpk index of 1.00 equates to a defect rate of

Accepted Answer

A)  five percent 
B)  3.4 defects per million 
C)  2.7 per 1,000 items 
D)  97.23 percent 
E)  one percent 
A)  five percent 
B)  3.4 defects per million 
C)  2.7 per 1,000 items 
D)  97.23 percent 
E)  one percent C

Question 2

If a sample of items is taken and the mean of the sample is outside the control limits the process is

Accepted Answer

A)  out of control and the cause should be established 
B)  in control, but not capable of producing within the established control limits 
C)  within the established control limits with only natural causes of variation 
D)  monitored closely to see if the next sample mean will also fall outside the control limits 
E)  producing high quality products 
A)  out of control and the cause should be established 
B)  in control, but not capable of producing within the established control limits 
C)  within the established control limits with only natural causes of variation 
D)  monitored closely to see if the next sample mean will also fall outside the control limits 
E)  producing high quality products A

Question 3

A lot that is accepted by acceptance sampling is certified to be free of defects.

Accepted Answer

A) True 
 B)False  False

Question 4

The c-chart signals whether there has been a

Accepted Answer

A)  gain or loss in uniformity 
B)  change in the number of defects per unit 
C)  change in the central tendency of the process output 
D)  change in the percent defective in a sample 
E)  change in the AOQ 
A)  gain or loss in uniformity 
B)  change in the number of defects per unit 
C)  change in the central tendency of the process output 
D)  change in the percent defective in a sample 
E)  change in the AOQ

Question 5

The purpose of process control is to detect when natural causes of variation are present.

Accepted Answer

A) True 
 B)False

Question 6

A retail store manager is trying to improve and control the rate at which cashiers sign customers up for store credit cards. Suppose that the manager wants the maximum standard deviation of the sampling distribution to be 5% and he cannot estimate p-bar. How many observations per sample would this require?

Accepted Answer

Maximum standard deviation occ

Question 7

The normal application of a p-chart is in

Accepted Answer

A)  process sampling by variables 
B)  acceptance sampling by variables 
C)  process sampling by attributes 
D)  acceptance sampling by attributes 
E)  none of the above 
A)  process sampling by variables 
B)  acceptance sampling by variables 
C)  process sampling by attributes 
D)  acceptance sampling by attributes 
E)  none of the above

Question 8

A process is said to be in statistical control when assignable causes are the only sources of variation.

Accepted Answer

A) True 
 B)False

Question 9

The Central Limit Theorem

Accepted Answer

A)  is the theoretical foundation of the c-chart 
B)  states that the average of assignable variations is zero 
C)  allows managers to use the normal distribution as the basis for building some control charts 
D)  states that the average range can be used as a proxy for the standard deviation 
E)  controls the steepness of an operating characteristic curve 
A)  is the theoretical foundation of the c-chart 
B)  states that the average of assignable variations is zero 
C)  allows managers to use the normal distribution as the basis for building some control charts 
D)  states that the average range can be used as a proxy for the standard deviation 
E)  controls the steepness of an operating characteristic curve

Question 10

A Cpk index greater than __________ is a capable process, one that generates fewer than 2.7 defects per 1000 at the ±3σ level.

Accepted Answer

Question 11

The causes of variation in statistical process control are

Accepted Answer

A)  cycles, trends, seasonality, and random variations 
B)  producer's causes and consumer's causes 
C)  mean and range 
D)  natural causes and assignable causes 
E)  Type I and Type II 
A)  cycles, trends, seasonality, and random variations 
B)  producer's causes and consumer's causes 
C)  mean and range 
D)  natural causes and assignable causes 
E)  Type I and Type II

Question 12

A part that connects two levels should have a distance between the two holes of 4". It has been determined that x-bar and R-charts should be set up to determine if the process is in statistical control. The following ten samples of size four were collected. Calculate the control limits, plot the control charts, and determine if the process is in control.

Accepted Answer

@#IMG-DLM& @#IMG-DLM& @#IMG-DLM& The process is ou

Question 13

A normal distribution is generally described by its two parameters: the mean and the range.

Accepted Answer

A) True 
 B)False

Question 14

A retail store manager is trying to improve and control the rate at which cashiers sign customers up
for store credit cards. After posting a p-chart of the store's credit card sign-ups the manager takes
new samples of size 50 three weeks later. He finds that each sample of 50 contained 5 credit card
signups on average. Find p-bar and 99.73% control limits.

Accepted Answer

P-bar = 5/50 = .1 or 10%. Sigma-p = sqrt

Question 15

The Cpk index measures the difference between desired and actual dimensions of goods or services produced.

Accepted Answer

A) True 
 B)False

Question 16

The acceptable quality level (AQL) is the average level of quality we are willing to accept.

Accepted Answer

A) True 
 B)False

Question 17

The number of defects after a hotel room cleaning (sheets not straight, smears on mirror, missed debris on carpet, etc) should be measured using a(n)

Accepted Answer

A)  x-bar chart 
B)  R-chart 
C)  p-chart 
D)  c-chart 
E)  either x-bar or R chart 
A)  x-bar chart 
B)  R-chart 
C)  p-chart 
D)  c-chart 
E)  either x-bar or R chart

Question 18

Assignable causes

Accepted Answer

A)  are not as important as natural causes 
B)  are within the limits of a control chart 
C)  depend on the inspector assigned to the job 
D)  are also referred to as "chance" causes 
E)  are causes of variation that can be identified and investigated 
A)  are not as important as natural causes 
B)  are within the limits of a control chart 
C)  depend on the inspector assigned to the job 
D)  are also referred to as "chance" causes 
E)  are causes of variation that can be identified and investigated

Question 19

McDaniel Shipyards wants to develop control charts to assess the quality of its steel plate. They take ten sheets of 1" steel plate and compute the number of cosmetic flaws on each roll. Each sheet is 20' by 100'. Based on the following data, develop limits for the control chart, plot the control chart, and determine whether the process is in control.

Accepted Answer

@#IMG-DLM& @#IMG-DLM& Sample six is abov

Question 20

The __________ is a quality control chart that indicates when changes occur in the central tendency of a production process.

Accepted Answer

The answer of The __________ is a quality control chart...

Exam 23 Managing Quality

A Cpk index of 1.00 equates to a defect rate of

If a sample of items is taken and the mean of the sample is outside the control limits the process is

A lot that is accepted by acceptance sampling is certified to be free of defects.

The c-chart signals whether there has been a

The purpose of process control is to detect when natural causes of variation are present.

The normal application of a p-chart is in

A process is said to be in statistical control when assignable causes are the only sources of variation.

The Central Limit Theorem

A Cpk index greater than __________ is a capable process, one that generates fewer than 2.7 defects per 1000 at the ±3σ level.

The causes of variation in statistical process control are

A normal distribution is generally described by its two parameters: the mean and the range.

The Cpk index measures the difference between desired and actual dimensions of goods or services produced.

The acceptable quality level (AQL) is the average level of quality we are willing to accept.

The number of defects after a hotel room cleaning (sheets not straight, smears on mirror, missed debris on carpet, etc) should be measured using a(n)

Assignable causes

The __________ is a quality control chart that indicates when changes occur in the central tendency of a production process.

Operations and Productivity

Operations Strategy in a Global Environment

Project Management

Forecasting

Design of Goods and Services

Managing Quality

Process Strategy

Location Strategies

Layout Strategies

Human Resources, Job Design, and Work Measurement

Supply-Chain Management

Inventory Management

Aggregate Planning

Material Requirements Planning Mrp and Erp

Short-Term Scheduling

Just-In-Time and Lean Options

Maintenance and Reliability

Statistical Tools for Managers

Acceptance Sampling

The Simplex Method of Linear Programming

The Modi and Vam Methods of Solving Transportation Problems

Vehicle Routing and Scheduling

Process Strategy

Supply-Chain Management

Vehicle Routing and Scheduling

Filters

A C_pk index of 1.00 equates to a defect rate of

A C_pk index greater than __________ is a capable process, one that generates fewer than 2.7 defects per 1000 at the ±3σ level.

The C_pk index measures the difference between desired and actual dimensions of goods or services produced.