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?
Compared to a two-level factorial experiment, which of the following is an advantage of an experiment in three levels?
In the theory of constraints the “subordinate” step refers to:
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?
This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 4?
The Toyota Production System, among other things, was the birthplace for the practice of _______________.
One of the most popular measures of variability in a data set or population is ______________.
Which of the following is NOT an advantage of using a median?
The null hypothesis should be:
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.
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?
At a particular time, three components are in parallel and each has a reliability of 0.98. What is the reliability of the system?
Voice of Customer is?
Which of the following describes the 95% confidence interval of a 20% absentee rate in a department with 30 people?
A process using a p-chart has pbar = 0.076 and nbar = 4.86. Find the control limits.
Dr. Joseph M. Juran:
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:
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.
In comparison to a full-factorial design of experiment (DOE), a traditional, one-at-a-time approach will
Which of the following is not a Measure of Central Tendency?
The word takt is closest to the theory of constraints word:
Poka-yoke is best defined as
Calculate the main effect of factor A:
The purpose of using control charts is to
If item A is more likely to be detected than item B which will have the highest Occurrence value?
Positional, cyclical, and temporal variations are most commonly analyzed in
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?
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?
A team wants a technique for determining and displaying priorities based on frequency of various defect types. They should use:
Is it safe to assume that the interaction effects are negligible?
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
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 =:
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.
Find the value of (7) in the ANOVA table. Assume:
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.
Calculate the main effect of factor A (i. e. A+ – A– ).
Find the value of (3) in the ANOVA table. Assume:
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
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?
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:
Customer segmentation refers to:
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:
Intuitively, which factor A or B seems most likely to be significant?
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:
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:
A team wants a technique for obtaining a large number of possible reasons for excess variation in a dimension. They should use:
A quality leader who did extensive work with Japanese industry is:
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?
Find the value of (9) in the ANOVA table. Assume:
Find Cp and Cpk.
(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:
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.
Calculate the interaction effect.
