Question 1

We can examine the effect of the sampling plan on both types of risks by varying the assumed​

Accepted Answer

A)  ​percentage of defective items in the lot. 
B)  ​number of defective items in the sample. 
C)  ​probability of accepting the lot. 
D)  ​number of units in the lot. 
A)  ​percentage of defective items in the lot. 
B)  ​number of defective items in the sample. 
C)  ​probability of accepting the lot. 
D)  ​number of units in the lot. A

Question 2

The upper and lower control limits of the mean of a process are 66 and 54. Samples of size 25 are used for the inspection process. Determine the mean and the standard deviation for this process.

Accepted Answer

Mean = 60
Standard deviation = 10

Question 3

Variations in process output that are due to factors in the production process such as machine tools wearing out are _____ causes.

Accepted Answer

A)  assignable 
B)  common 
C)  controllable 
D)  random 
A)  assignable 
B)  common 
C)  controllable 
D)  random A

Question 4

The three quality processes on which Juran's approach to quality focused include all of the following except quality

Accepted Answer

A)  planning. 
B)  management. 
C)  control. 
D)  improvement. 
A)  planning. 
B)  management. 
C)  control. 
D)  improvement.

Question 5

The quality control department of a company has decided to select a sample of 10 items from the shipments received; and if the sample contains no defective parts, the entire shipment will be accepted.
a.
If four percent of the items in the shipment are defective, what is the probability that the entire shipment will be accepted?
b.
Use the binomial table and read the probability of accepting shipments that contain 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50% defective units.

Accepted Answer

The answer of The quality control department of a company...

Question 6

If the value of c in a single-stage sampling plan is increased, with n remaining constant, the probability of accepting the lot​

Accepted Answer

A)  ​increases. 
B)  ​decreases. 
C)  remains unchanged. 
D)  ​might increase or decrease, depending on the lot percent defective. 
A)  ​increases. 
B)  ​decreases. 
C)  remains unchanged. 
D)  ​might increase or decrease, depending on the lot percent defective.

Question 7

When a Motorola executive said "That evaluation is …. perhaps the most cost-effective, value-added business consultation available anywhere in the world today" he was referring to​

Accepted Answer

A)  ​ISO 9000 standards. 
B)  ​the Six Sigma philosophy. 
C)  ​Deming's 14 Points. 
D)  ​the Malcolm Baldrige Quality Award. 
A)  ​ISO 9000 standards. 
B)  ​the Six Sigma philosophy. 
C)  ​Deming's 14 Points. 
D)  ​the Malcolm Baldrige Quality Award.

Question 8

The second stage of a two-stage acceptance sampling plan is executed when the first-stage result is​

Accepted Answer

A)  ​x1 > c1 
B)  ​c1 1 2 
C)  ​x1 > c2 
D)  ​x1 > c1 + c2 
A)  ​x1 > c1 
B)  ​c1 1 2 
C)  ​x1 > c2 
D)  ​x1 > c1 + c2

Question 9

The null hypothesis assumes that production process is

Accepted Answer

A)  out of control. 
B)  in control. 
C)  changing. 
D)  random. 
A)  out of control. 
B)  in control. 
C)  changing. 
D)  random.

Question 10

A(n) _____ chart is used to monitor the range of measurements in the sample.

Accepted Answer

A)    
B)  R. 
C)  p. 
D)  np. 
A)    
B)  R. 
C)  p. 
D)  np.

Question 11

An estimator of the process standard deviation is the average _____ divided by a constant that depends on the sample size.

Accepted Answer

A)  control 
B)  limit 
C)  constant 
D)  range 
A)  control 
B)  limit 
C)  constant 
D)  range

Question 12

The Malcolm Baldrige National Quality Award was established in

Accepted Answer

A)  ​1954. 
B)  ​1971. 
C)  ​1987. 
D)  ​1993. 
A)  ​1954. 
B)  ​1971. 
C)  ​1987. 
D)  ​1993.

Question 13

In acceptance sampling, the risk of rejecting a good-quality lot is known as

Accepted Answer

A)  Consumer's risk. 
B)  Producer's risk. 
C)  a Type II error. 
D)  None of these alternatives is correct. 
A)  Consumer's risk. 
B)  Producer's risk. 
C)  a Type II error. 
D)  None of these alternatives is correct.

Question 14

Heavy emphasis on statistical analysis and careful measurement are closely associated with​

Accepted Answer

A)  ​Total Quality Management. 
B)  ​ISO 9000. 
C)  ​Baldrige National Quality Program. 
D)  ​Six Sigma. 
A)  ​Total Quality Management. 
B)  ​ISO 9000. 
C)  ​Baldrige National Quality Program. 
D)  ​Six Sigma.

Question 15

In quality control terminology, the group of items being considered based on specified quality characteristics is called a

Accepted Answer

A)  bin. 
B)  population. 
C)  lot. 
D)  sample. 
A)  bin. 
B)  population. 
C)  lot. 
D)  sample.

Question 16

A production process is considered to be in control if it processes at least 97.5% nondefective items. Samples of size 450 are used for the inspection process. Determine the upper and lower control limits for the P chart of defective elements.

Accepted Answer

UCL = 0.0471
LCL = 0

Question 17

In contrast to Deming's philosophy, which required a major cultural change in the organization, Juran's programs were designed to improve quality by​

Accepted Answer

A)  ​working within the current organizational system. 
B)  ​reducing the number of levels in the organizational structure. 
C)  ​changing customer perception and expectations. 
D)  ​identifying and replacing the most counter-productive employees. 
A)  ​working within the current organizational system. 
B)  ​reducing the number of levels in the organizational structure. 
C)  ​changing customer perception and expectations. 
D)  ​identifying and replacing the most counter-productive employees.

Question 18

Control charts assist in detecting which type of process?

Accepted Answer

A)  Out of control 
B)  In statistical control 
C)  Skewed control 
D)  None of these alternatives is correct. 
A)  Out of control 
B)  In statistical control 
C)  Skewed control 
D)  None of these alternatives is correct.

Question 19

The process mean and standard deviation can be estimated by using samples that are selected from the process when​

Accepted Answer

A)  ​it has only assignable-cause variation. 
B)  ​its output is uniformly distributed. 
C)  ​it is assumed to be operating in control. 
D)  ​it is operating at peak capacity. 
A)  ​it has only assignable-cause variation. 
B)  ​its output is uniformly distributed. 
C)  ​it is assumed to be operating in control. 
D)  ​it is operating at peak capacity.

Question 20

Adjustments or changes are necessary when the process is

Accepted Answer

A)  out of control. 
B)  in statistical control. 
C)  in control. 
D)  working. 
A)  out of control. 
B)  in statistical control. 
C)  in control. 
D)  working.

Exam 21: Statistical Methods for Quality Control

We can examine the effect of the sampling plan on both types of risks by varying the assumed​

The upper and lower control limits of the mean of a process are 66 and 54. Samples of size 25 are used for the inspection process. Determine the mean and the standard deviation for this process.

Variations in process output that are due to factors in the production process such as machine tools wearing out are _____ causes.

The three quality processes on which Juran's approach to quality focused include all of the following except quality

If the value of c in a single-stage sampling plan is increased, with n remaining constant, the probability of accepting the lot​

When a Motorola executive said "That evaluation is …. perhaps the most cost-effective, value-added business consultation available anywhere in the world today" he was referring to​

The second stage of a two-stage acceptance sampling plan is executed when the first-stage result is​

The null hypothesis assumes that production process is

A(n) _____ chart is used to monitor the range of measurements in the sample.

An estimator of the process standard deviation is the average _____ divided by a constant that depends on the sample size.

The Malcolm Baldrige National Quality Award was established in

In acceptance sampling, the risk of rejecting a good-quality lot is known as

Heavy emphasis on statistical analysis and careful measurement are closely associated with​

In quality control terminology, the group of items being considered based on specified quality characteristics is called a

A production process is considered to be in control if it processes at least 97.5% nondefective items. Samples of size 450 are used for the inspection process. Determine the upper and lower control limits for the P chart of defective elements.

In contrast to Deming's philosophy, which required a major cultural change in the organization, Juran's programs were designed to improve quality by​

Control charts assist in detecting which type of process?

The process mean and standard deviation can be estimated by using samples that are selected from the process when​

Adjustments or changes are necessary when the process is

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Decision Analysis

Index Numbers

Sample Survey

Filters

We can examine the effect of the sampling plan on both types of risks by varying the assumed

If the value of c in a single-stage sampling plan is increased, with n remaining constant, the probability of accepting the lot

When a Motorola executive said "That evaluation is …. perhaps the most cost-effective, value-added business consultation available anywhere in the world today" he was referring to

The second stage of a two-stage acceptance sampling plan is executed when the first-stage result is

Heavy emphasis on statistical analysis and careful measurement are closely associated with

In contrast to Deming's philosophy, which required a major cultural change in the organization, Juran's programs were designed to improve quality by

The process mean and standard deviation can be estimated by using samples that are selected from the process when