Question 1

The U.S.government awards for quality achievement are called the Malcolm Baldrige National Quality Awards.

Accepted Answer

A) True 
 B)False

Question 2

An airline company tracks the number of lost bags that occur each day.This is best monitored by which of the following control charts?

Accepted Answer

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

Question 3

A p-chart could be used to monitor the average weight of cereal boxes.

Accepted Answer

A) True 
 B)False

Question 4

Table 15-1
  
-Refer to Table 15-1.The average range of a process for packaging cereal is 1.1 ounces.If the sample size is 10, find the lower control chart limit for the range chart.

Accepted Answer

A) 0.245 
B) 1.955 
C) 1.777 
D) 0.223 
A) 0.245 
B) 1.955 
C) 1.777 
D) 0.223

Question 5

Leo Phan is the new business manager at PC Priced Right.He is concerned that his register is incorrectly ringing items.For those items sold during the last seven days, he has counted 10 that were incorrectly charged.What would be the 99.7% control limits for the number of incorrect rings per week on this process?

Accepted Answer

LCL = 0 .5

Question 6

The R-chart would be useful when we

Accepted Answer

A) took a number of measurements and computed the average. 
B) took a number of measurements and computed the ranges. 
C) found the fraction of the production lot defective. 
D) found the number of defective items in a production lot. 
A) took a number of measurements and computed the average. 
B) took a number of measurements and computed the ranges. 
C) found the fraction of the production lot defective. 
D) found the number of defective items in a production lot.

Question 7

Table 15-1
  
-Refer to Table 15-1.The Pristine Paint Company produces paint in gallon cans.They have found that in more than 10 samples of 8 cans each, the average gallon can contains 1.1 gallons of paint.The average range found over these samples is 0.15 gallons.What is the upper control limit for the sample averages in this process?

Accepted Answer

A) 1.100 
B) 1.150 
C) 1.268 
D) 1.156 
A) 1.100 
B) 1.150 
C) 1.268 
D) 1.156

Question 8

W.Edwards Deming introduced control charts in the 1920s.

Accepted Answer

A) True 
 B)False

Question 9

Table 15-1
  
-Refer to Table 15-1.To guarantee that cans of soup are properly filled, some cans are sampled and the amounts measured.The overall average for the samples is 12 ounces.Each sample contains 10 cans.The average range is 0.4 ounces.The upper control chart limit for the sample averages would be

Accepted Answer

A) 12.1232. 
B) 11.8768. 
C) 13.2. 
D) 12.308. 
A) 12.1232. 
B) 11.8768. 
C) 13.2. 
D) 12.308.

Question 10

Samples sizes of five are often used when building control charts.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following statements is false regarding control charts?

Accepted Answer

A) X-bar charts measure central tendency in a process. 
B) R-charts measure the variability of a process. 
C) It is not possible to have a LCL below 0 in a c-chart. 
D) The nominal line is always the midpoint between the UCL and LCL. 
A) X-bar charts measure central tendency in a process. 
B) R-charts measure the variability of a process. 
C) It is not possible to have a LCL below 0 in a c-chart. 
D) The nominal line is always the midpoint between the UCL and LCL.

Question 12

A retail store charts the number of customer returns per day.Under normal conditions, the store expects 10 customer returns per day.During the past 10 days, the observed customer returns were as follows: 12, 9, 8, 14, 8, 13, 8, 10, 9, 11.Using 99.7% control limits, is the process under control?

Accepted Answer

The process is in co

Question 13

A coffee company is attempting to make certain that all its packaged coffee beans contain the same amount of coffee bean by weight.Over the last few days, it has taken several samples.The overall average weight of the sampled packages is 16 ounces, with an average range of 3 ounces.Each sample was of four packages.What would be the 99.7 upper and lower control limits for an R chart?

Accepted Answer

UCL = 6.84

Question 14

Baker studied his control chart and noticed it had been built with repeated samples of eight units and three sigma limits that were UCL = 73.07 and LCL = 58.93.What is the process standard deviation?

Accepted Answer

A) 2.35 
B) 6.67 
C) 5.26 
D) 3.33 
A) 2.35 
B) 6.67 
C) 5.26 
D) 3.33

Question 15

A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information than it was intended to hold.In the past, only 5% of these diskettes have had bad sectors.If the company wishes to set 95.5% control limits based on samples of size 500, what would these limits be?

Accepted Answer

LCL = 0.03

Question 16

A 400-student lecture in introductory statistics conducted by a tenured professor breaks into 20 sections of 20 students for problem sessions run by helpful graduate assistants that give weekly quizzes to lighten the mood.The graduate assistants determine their section averages for their quiz each week and compare the numbers.Which of these statements is best?

Accepted Answer

A) The standard deviation of the section averages should approach the overall standard deviation. 
B) A graduate assistant whose section quiz average falls outside three sigma limits should be replaced. 
C) For any given week, the section averages should be normally distributed. 
D) 95.5% of the section averages should fall within three standard deviations of the overall average. 
A) The standard deviation of the section averages should approach the overall standard deviation. 
B) A graduate assistant whose section quiz average falls outside three sigma limits should be replaced. 
C) For any given week, the section averages should be normally distributed. 
D) 95.5% of the section averages should fall within three standard deviations of the overall average.

Question 17

Table 15-2
Given the sample results (100 units in each sample):
  
-Based on Table 15-2, find the 95.5% lower limit of the appropriate p-chart.

Accepted Answer

A) 0.0076 
B) 0.0964 
C) 0.2014 
D) 0.1397 
A) 0.0076 
B) 0.0964 
C) 0.2014 
D) 0.1397

Question 18

A local children's boutique specializes in formal wear for young girls.It has recently hired a new seamstress.To assure the dresses have standard sizes, twenty samples of each 12 dresses that were labeled 3T were sampled.The average length from shoulder to hemline measured 21 inches with a range of 0.5 inches.A sample has just been taken with the following lengths: 21.25, 22.0, 21.5, 20.75, 21.25, 21.35, 21.35, 21.35, 21.35, 21.35, 21.35, and 21.35.Is the new seamstress performing at an acceptable quality level?

Accepted Answer

UCL = 21 + 0.5(0.266)= 21.133 LCL = 21 -

Question 19

Table 15-1
  
-Use the data shown below and the information in Table 15-1 to develop an upper control limit for a control chart that monitors consistency.What is the upper control limit?

Accepted Answer

A) 2.11 
B) 6.38 
C) 10.82 
D) 1.17 
A) 2.11 
B) 6.38 
C) 10.82 
D) 1.17

Question 20

The U.S.government award for quality achievement is the

Accepted Answer

A) Deming Prize. 
B) Shewhart Symbol of Excellence. 
C) Malcolm Baldrige National Quality Award. 
D) Bush Award for Quality Management. 
A) Deming Prize. 
B) Shewhart Symbol of Excellence. 
C) Malcolm Baldrige National Quality Award. 
D) Bush Award for Quality Management.

The U.S.government awards for quality achievement are called the Malcolm Baldrige National Quality Awards.

An airline company tracks the number of lost bags that occur each day.This is best monitored by which of the following control charts?

A p-chart could be used to monitor the average weight of cereal boxes.

Table 15-1 -Refer to Table 15-1.The average range of a process for packaging cereal is 1.1 ounces.If the sample size is 10, find the lower control chart limit for the range chart.

The R-chart would be useful when we

W.Edwards Deming introduced control charts in the 1920s.

Samples sizes of five are often used when building control charts.

Which of the following statements is false regarding control charts?

A retail store charts the number of customer returns per day.Under normal conditions, the store expects 10 customer returns per day.During the past 10 days, the observed customer returns were as follows: 12, 9, 8, 14, 8, 13, 8, 10, 9, 11.Using 99.7% control limits, is the process under control?

Baker studied his control chart and noticed it had been built with repeated samples of eight units and three sigma limits that were UCL = 73.07 and LCL = 58.93.What is the process standard deviation?

Table 15-2 Given the sample results (100 units in each sample): -Based on Table 15-2, find the 95.5% lower limit of the appropriate p-chart.

Table 15-1 -Use the data shown below and the information in Table 15-1 to develop an upper control limit for a control chart that monitors consistency.What is the upper control limit?

The U.S.government award for quality achievement is the

Introduction to Quantitative Analysis

Probability Concepts and Applications

Decision Analysis

Regression Models

Forecasting

Inventory Control Models

Linear Programming Models: Graphical and Computer Methods

Linear Programming Applications

Transportation, Assignment, and Network Models

Integer Programming, Goal Programming, and Nonlinear Programming

Project Management

Waiting Lines and Queuing Theory Models

Simulation Modeling

Markov Analysis

Analytic Hierarchy Process

Dynamic Programming

Decision Theory and the Normal Distribution

Game Theory

Mathematical Tools: Determinants and Matrices

Calculus-Based Optimization

Linear Programming: The Simplex Method

Transportation, Assignment, and Network Algorithms

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Exam 15: Statistical Quality Control

The U.S.government awards for quality achievement are called the Malcolm Baldrige National Quality Awards.

An airline company tracks the number of lost bags that occur each day.This is best monitored by which of the following control charts?

A p-chart could be used to monitor the average weight of cereal boxes.

Table 15-1 -Refer to Table 15-1.The average range of a process for packaging cereal is 1.1 ounces.If the sample size is 10, find the lower control chart limit for the range chart.

The R-chart would be useful when we

W.Edwards Deming introduced control charts in the 1920s.

Samples sizes of five are often used when building control charts.

Which of the following statements is false regarding control charts?

A retail store charts the number of customer returns per day.Under normal conditions, the store expects 10 customer returns per day.During the past 10 days, the observed customer returns were as follows: 12, 9, 8, 14, 8, 13, 8, 10, 9, 11.Using 99.7% control limits, is the process under control?

Baker studied his control chart and noticed it had been built with repeated samples of eight units and three sigma limits that were UCL = 73.07 and LCL = 58.93.What is the process standard deviation?

Table 15-2 Given the sample results (100 units in each sample): -Based on Table 15-2, find the 95.5% lower limit of the appropriate p-chart.

Table 15-1 -Use the data shown below and the information in Table 15-1 to develop an upper control limit for a control chart that monitors consistency.What is the upper control limit?

The U.S.government award for quality achievement is the

Introduction to Quantitative Analysis

Probability Concepts and Applications

Decision Analysis

Regression Models

Forecasting

Inventory Control Models

Linear Programming Models: Graphical and Computer Methods

Linear Programming Applications

Transportation, Assignment, and Network Models

Integer Programming, Goal Programming, and Nonlinear Programming

Project Management

Waiting Lines and Queuing Theory Models

Simulation Modeling

Markov Analysis

Analytic Hierarchy Process

Dynamic Programming

Decision Theory and the Normal Distribution

Game Theory

Mathematical Tools: Determinants and Matrices

Calculus-Based Optimization

Linear Programming: The Simplex Method

Transportation, Assignment, and Network Algorithms

Filters