In comparison to a full-factorial design of experiment (DOE), a traditional, one-at-a-time approach will
Use the reliability formula from the previous problem to find the reliability at MTBF.
A Six Sigma project designed to solve a particular problem needs a definition/scope statement to help avoid:
Which of the following tools would be most appropriate for collecting data to study the symptoms of a problem?
Which of the following best describes a controlled variable whose influence on a response is being studied?
This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 16?
When the design for assembly is being evaluated, all of the following factors should be considered EXCEPT design for
In regression analysis, which of the following techniques can be used to reduce the higher-order terms in the model?
Typically, which of the following actions is NOT used to reduce process cycle time?
According to Juran, when a major quality improvement project is launched, which of the following describes the desired change in performance level?
This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 11?
Customers make a purchase decision based on a number of factors. In Lean Six Sigma we refer to these decision points as CTQ's which stands for __________.
A team has completed a brainstorming session that has generated a large number of ideas. The team needs to organize these ideas in natural groupings. Which tool is most appropriate?
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?
If a process follows an exponential distribution with a mean of 25, what is the standard deviation for the process?
A complex system has many causes and effects. These may be illustrated on which of the following:
Three Standard Deviations on left and right side of the mean would include what % of the total data points in Normal Distribution?
An automatic gaging system is to be installed in a process. The gage will insert data values into a data base from which machine adjustments will be made automatically. A critical factor in specifying the equipment is:
The team in the above problem draws arrows from Post-It® notes that are causes to notes that are the effects of these causes. This step is best described by which approach to problem solving?
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 1/2 inch bolt.
In problem 1, do the data indicate that the population for machine A has a larger standard deviation?
The management team in the above problem assigns each goal a numerical value designating its importance. The “bulls eyes,” circles and triangles are replaced by the values 3, 2 and 1 respectively. Entries are made in each box by multiplying the 3, 2 or 1 by the goal value.
The importance of each activity is calculated by adding the entries in its row.
SCENARIO
A Six Sigma team is measuring the moisture content of corn starch as it leaves the conveyer belt of a dryer. They collect one sample four cups of starch at times indicated in the chart at fixed locations labeled A, B, C, and D across the end of the belt. See the diagram below.
After some work on the dryer, additional data are collected which when plotted looks like this:
Which type of variation dominates?
(Refer to the previous problem) To estimate the within treatment variance the experimenters would calculate the variances of:
A team wants a technique for determining and displaying priorities based on frequency of various defect types. They should use:
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:
SCENARIO
A Six Sigma team is measuring the moisture content of corn starch as it leaves the conveyer belt of a dryer. They collect one sample four cups of starch at times indicated in the chart at fixed locations labeled A, B, C, and D across the end of the belt. See the diagram below.
After some more work on the dryer, additional data are collected which when plotted looks like this:
Which type of variation dominates?
The average weight of castings produced at the Nebraska foundry is 3.7 lbs. A new supplier from Kansas has submitted a batch of castings known to have normally distributed weights. A random sample of 10 has an average weight of 3.6 lbs. and standard deviation 0.06 lbs. Do these data indicate that the Kansas foundry produce lighter castings on average?
The Toronto plant produces appliances in the following distribution: Type A 23% Type B 42% Type C 35% A random sample of 300 appliances from the Texas plant has the following distribution: Type A 73 Type B 111 Type C 116 Is the distribution of appliances at the Texas plant the same as that at the Toronto plant?
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?
George is an employee of Black, Inc. John is George’s internal customer. Which statement is true?