Question 1

An x-bar and R chart has four part measurements per sample. The control limits on the averages chart are 2.996 and 3.256. Assume the process data form a normal distribution. What is the probability that the next plotted point falls outside the control limits?

Question 2

Compared to a two-level factorial experiment, which of the following is an advantage of an experiment in three levels?

Question 3

In the theory of constraints the “subordinate” step refers to:

Question 4

The following contingency table was developed for an organization.

On the basis of this information, what is the expected number of oil changes for Station 1?

Question 5

This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 4?

Question 6

The Toyota Production System, among other things, was the birthplace for the practice of _______________.

Question 7

One of the most popular measures of variability in a data set or population is ______________.

Question 8

Which of the following is NOT an advantage of using a median?

Question 9

The null hypothesis should be:

Question 10

A set of data from a process has 8 readings per sample and 50 samples. The mean of the 50 sample means is 12.62. The mean of the 50 ranges is 0.18.Find the control limits for a median chart.

Question 11

A Black Belt is going to monitor the number of defects on different size samples. Which of the following control charts would be most appropriate?

Question 12

At a particular time, three components are in parallel and each has a reliability of 0.98. What is the reliability of the system?

Question 13

Voice of Customer is?

Question 14

Which of the following describes the 95% confidence interval of a 20% absentee rate in a department with 30 people?

Question 15

A process using a p-chart has pbar = 0.076 and nbar = 4.86. Find the control limits.

Question 16

Dr. Joseph M. Juran:

Question 17

A newspaper article describes a high positive correlation between obesity and orange juice consumption among six-year-olds. Parents who restrict the use of orange juice for their children have:

Question 18

An x-bar control chart has been established with control limits of 3.245 and 3.257, n = 5. An engineer collects the following sample and plots the average on the control chart: 3.257, 3,256, 3. 258, 3.259.

Question 19

In comparison to a full-factorial design of experiment (DOE), a traditional, one-at-a-time approach will

Question 20

Which of the following is not a Measure of Central Tendency?

Question 21

The word takt is closest to the theory of constraints word:

Question 22

Poka-yoke is best defined as

Question 23

Calculate the main effect of factor A:

Question 24

The purpose of using control charts is to

Question 25

If item A is more likely to be detected than item B which will have the highest Occurrence value?

Question 26

Positional, cyclical, and temporal variations are most commonly analyzed in

Question 27

A team wants to make a schedule for a project showing which tasks must be done sequentially and which may be done simultaneously. Which tool is most appropriate?

Question 28

A team is investigating ways to reduce power outages. They determine that an outage can occur in only three ways: grid failure, local transformer failure or local overload. They then investigate each of these three events for possible causes, etc. They draw a diagram that “fans out” using the power outage as the handle of the fan.

These improvements are best described by which approach to problem solving?

Question 29

A team wants a technique for determining and displaying priorities based on frequency of various defect types. They should use:

Question 30

Is it safe to assume that the interaction effects are negligible?

Question 31

After a team has engaged in diversion activities they may need to employ a tool for conversion. Examples of such a tool are:

I. nominal group technique

II. Multivoting

III. cause and effect diagram

IV. activity network diagram

V. matrix diagrams

Question 32

There are 14 different defects that can occur on a completed time card. The payroll department collects 328 cards and finds a total of 87 defects. DPMO =:

Question 33

This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet. Find the approximate probability it is a bolt.

Question 34

Find the value of (7) in the ANOVA table. Assume:

Question 35

This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet.

Find the approximate probability it is larger than 1/2.

Question 36

Calculate the main effect of factor A (i. e. A+ – A– ).

Question 37

Find the value of (3) in the ANOVA table. Assume:

Question 38

The following data were collected on the diameters of turned shafts: 2.506 2.508 2.505 2.505. These values are:

I. Attribute data

II. Discrete data

III. Variables data

IV. Continuous data

Question 39

When comparing two vendors’ machines it is found that a sample of 1000 parts from machine A has 23 defectives and a sample of 1300 parts from machine B has 36 defectives. Do the data indicate that machine B has a higher rate of defectives?

Question 40

Deming called the technique of studying a sample to gain understanding of the distribution of a population an “enumerative study.” His main objection to these studies was:

Question 41

Customer segmentation refers to:

Question 42

A team has been asked to reduce the cycle time for a process. The team decides to collect baseline data. It will do this by:

Question 43

Intuitively, which factor A or B seems most likely to be significant?

Question 44

If the probability that event A occurs is 0.51, the probability that event B occurs is 0.64 and events A and B are statistically independent then:

Question 45

A population of size 1,000,000 has mean 42 and standard deviation 6. Sixty random samples, each of size 15 are selected. According to the Central Limit Theorem the distribution of the sixty sample means has a mean of approximately:

Question 46

A team wants a technique for obtaining a large number of possible reasons for excess variation in a dimension. They should use:

Question 47

A quality leader who did extensive work with Japanese industry is:

Question 48

A machine tool vender wants to sell an injection molding machine. The current machine produces 3.2% defectives. A sample of 1100 from the vender’s machine has 2.9% defective. Do these numbers indicate that the proposed machine has a lower rate of defectives?

Question 49

Find the value of (9) in the ANOVA table. Assume:

Question 50

Find Cp and Cpk.

Question 51

(Refer to the previous problem) The variance of the five replications for each run is calculated. Most of these variances are approximately equal but two are significantly lower than the others. The experimenters would be especially interested in those two runs if they want to optimize:

Question 52

This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet. Find the approximate probability it is size 3/4.

Question 53

Calculate the interaction effect.