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?
A sample of size 50 from machine A has a mean of 18.2 and standard deviation 3.1. A sample of size 40 from machine B has mean 17.6 and standard deviation 2.8. Do these data indicate that the population for machine A has a larger mean? Assume the populations are normal.
An experiment has seven factors with two levels each. The experiment has eight runs. This experimental design is called:
A management team lists nine goals across the top of a rectangle and 15 activity initiatives along the left hand side of the rectangle. If one of the activities strongly supports one of the goals a circle is placed in the box where that activity’s row intersects the goal’s column. If the activity’s support is very strong a “bulls eye” is placed in the box and if the support is weak a triangle is used.
This best describes which problem solving tool?
A pharmaceutical manufacturer is designing an experiment to test four different capsule ingredients designed to reduce dissolution time. Each ingredient will be tested at 10 milligrams and 40 milligrams. A full factorial design is used with five replications per run. The number of levels, factors and runs is, respectively:
A random sample of 2500 printed brochures is found to have a total of three ink splotches. The rate of ink splotches in PPM is:
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:
Which of the following measures is increased when process performance is improved?
According to Juran, when a major quality improvement project is launched, which of the following describes the desired change in performance level?
A process shows the following number of defectives. Each sample size for this process is
85.3 8 2 7 7 6 8 8 9 5.
Find the control limits.
This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 5?
In order for a problem to be solved correctly, which of the following must occur first?
The term used to describe the risk of a Type I error in a test of hypotheses is?
When a process has proven itself to function at a Six Sigma level this means there are less than ________ defects per million opportunities.
(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:
The primary metric for a project is reduced cost for process A. Baseline data might include:
The leader in the quality movement who recommended that organizations “eliminate numerical quotas for the work force and numerical goals for management”:
The primary metric for a project is reduced cost for process A .A consequential metric could be:
A team’s goal is to improve information flow in a payroll function. They make thirty-three Post-It® notes, each listing an issue for further investigation. After some discussion, they group them into four categories: mandated record keeping, privacy concerns, insurance concerns and transfer concerns.
This grouping process is best described by which approach to problem solving?
This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 2?
Which of the following methods is used to develop an exhaustive list of ideas about a subject?
In regression analysis, which of the following techniques can be used to reduce the higher-order terms in the model?
A six sigma team has gathered data for a project proposal and is using the following notations.
I = Initial investment
C = Periodic maintenance cost
B = Benefits to be accrued
On the basis of the information above, which of the following is the criteria used to select a project?
One of the approaches used by TRIZ is referred to as “removing the contradiction.” A project team is asked to determine how many coats of paint should be applied to a panel. In this case the contradiction is:
This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 6?
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 the xbar chart.
A correct statement about the relationship between the terms parameter and statistic is:
In a certain sampling situation, ? = 0, ? = 0.08. The power of the sampling plan in this case is:
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.A customer requires that SPC charts be done on their forms which have spaces for only 5 readings per sample. In preparation for calculating the new control limits the following question is asked, “Will the new average range be larger or smaller than the current average range?” The answer is:
All of the following experimental designs can be used to investigate interactions EXCEPT
If the probability that event A occurs is 0.51, the probability that event B occurs is 0.64 and that probability that both A and B occur is 0.23 then:
The median is a better choice than the mean for a measure of central tendency if the data:
George is an employee of Black, Inc. John is George’s internal customer. Which statement is true?
A population is bimodal. One hundred samples of size 30 are randomly collected and the 100 sample means are calculated. The distribution of these sample means is:
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TESTED 29 Apr 2024
