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Q91. What is the Ppk of a process with a spread of 24 units, an average of 68, an upper limit of 82 and a lower limit of 54?
A. 1.68
B. 2.00
C. 4.00
D. 4.42
Answer: C
Q92. Which Experimental Design typically is most associated with the fewest number of input variables or factors in the design?
A. Response Surface design
B. Full Factorial design
C. Simple Linear Regression
D. Fractional Factorial design
Answer: A
Q93. Fractional Factorial designs are used to reduce the because the number of runs has been lowered.
A. Time and cost of experiments
B. Number of people involved
C. Number of data measurement points
D. Output summary
Answer: A
Q94. When a Belt creates a Process Map she will use a to depict a decision point requiring a Yes or No decision.
A. Circle
B. Square
C. Diamond
D. Rectangle
Answer: C
Q95. For the data shown here which statement(s) are true? (Note: There are 2 correct answers).
A. With 95% confidence, we cannot conclude if the samples are from three Normal Distributions.
B. With greater than 95% confidence, we conclude the samples are from Non-normal Distributions.
C. If we wanted to compare the Central Tendencies of these three samples we would use the one way ANOVA test.
D. If we wanted to compare the Central Tendencies of these three samples we could use Mood’s Median test.
Answer: B, D
Q96. Sally and Sara sell flower pots at their garage sale. Sally motivates Sara mentioning that they will sell a minimum of 15 pots per day if the outside temperature exceeds 60o F. From a sample, whose population is assumed to follow a Normal Distribution, taken for 30 days at 60 degrees or more an average of 13.6 pots per day were sold with a Standard Deviation of 0.7 pots. The statistical Degrees of Freedom for this example are?
A. 1
B. 29
C. 30
D. 31
E. 2
Answer: B
Q97. When we compare short-term and long-term Capability which of these is true?
A. Cp is better for the short term
B. Both short-term and long-term performance are alike
C. Performance tends to improve over time
D. Cp is better for the long-term
Answer: A
Q98. Using this partial Z Table, how many units from a month’s production run are expected to not satisfy customer requirements for the following process?
Upper specification limit: 7.2 Lower specification limit: 4.3 Mean of the process:
5.9 Standard Deviation: 0.65 Monthly production: 450 units
A. 3
B. 7
C. 10
D. 12
Answer: C
Q99. Use this data to calculate the Z score. Upper Spec Limit: 72
A. 0.27
B. 1.5
C. 2.33
D. 4.12
Answer: C
Q100. Questions that can be best answered by a Visual Factory include all of these except .
A. Are setups optimized for lower scrap levels?
B. Can extra inventory be seen easily?
C. Can changeover challenges be recognized?
D. Are unneeded tools or supplies easily noted?
Answer: A
Q101. One of the foundations of Lean Six Sigma is the concept that the output of a process
(Y) is influenced by the process inputs (X’s) and is commonly shown as which formula?
A. Y = Z(X2)
B. Y = f(X3)
C. Y = f(Xn)
D. Y = g(X+ 1.5)
Answer: C
Q102. All the data points that represent the total set of information of interest is called the .
A. Population
B. Sample
C. Frame
D. Spread
Answer: A
Q103. Early in a project a Belt will want to begin to identify and evaluate risk factors for the subject process and will therefore begin building a(n) .
A. FMEA
B. SIPOC
C. X-Y Diagram
D. Team Charter
Answer: A
Q104. Which of the items listed do not define what an X-Y Diagram is?
A. Created for every project
B. Based on team's collective opinions
C. Updated whenever a parameter is changed
D. Used to show each step in a process
E. A living document throughout project lifecycle
Answer: D
Q105. A fundamental rule is that both Standard Deviation and Variance can be added.
A. True
B. False
Answer: B