Six Sigma Six Sigma Certifications CLSSBB Questions & Answers

• Question 351:

  TRIZ is an acronym which refers to:

  A. a set of problem solving tools

  B. an organization of quality professionals

  C. an experiment using transitional results

  D. a Russian general responsible for creative thinking

  Correct Answer: A

• Question 352:

  Find the upper control limit for a range chart if n = 4 and the average range is 2.282.

  A. 2.282

  B. 4.564

  C. 5.208

  D. 3.423

  Correct Answer: C

  Explanation: The following formula is for calculating upper control limit for a range chart n = 4

  

  

  = 2.282 x 2.282 = 5.208 Use the following constants (D4) in the computation

• Question 353:

  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

  A. the process is out of control

  B. the process is not out of control

  C. the engineer misused the control chart

  D. the control limits are incorrect

  Correct Answer: C

• Question 354:

  In an experimental design context, replication refers to:

  A. duplicating experimental results at another location

  B. repeating a test with the same factor levels

  C. obtaining the same or similar results from different factors

  D. repeating an experiment but using at least one different factor level

  Correct Answer: C

• Question 355:

  A principle advantage of fractional factorial experimental designs is:

  A. reduced cost

  B. improved accuracy

  C. increased confounding

  D. higher confidence level

  E. reduced probability of type II errors

  Correct Answer: A

• Question 356:

  A principle disadvantage of fractional factorial experimental designs is:

  A. reduced cost

  B. improved accuracy

  C. confounding of effects

  D. higher confidence level

  E. reduced probability of type II errors

  Correct Answer: C

• Question 357:

  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:

  A. made a type I error

  B. made a type II error

  C. misunderstood margin of error

  D. confused correlation with causation

  Correct Answer: D

• Question 358:

  In a certain sampling situation, = 0, = 0.08. The power of the sampling plan in this case is:

  A. 0

  B. 0.08

  C. 1.00

  D. 0.92

  Correct Answer: D

  Explanation: The formula for power of sampling plan is (1-) = 1-0.08 = 0.92

• Question 359:

  The diameters of 50 randomly selected shafts have a mean of 1.525 and standard deviation of 0.006. Find the 95% lower confidence limit for the population mean.

  A. 1.523

  B. 1.524

  C. 1.525

  D. 1.526

  E. 1.527

  Correct Answer: A

  Explanation: n = 50 mean = 1.525 Standard deviation = 0.006 95% confidence interval = 1.96

  

  -z/2 /n 1.525-1.96(0.006/50) 1.525-0.00166=1.523

• Question 360:

  Find the mean, median and mode of the following data set:

  9, 11, 12, 12, 14, 18, 18, 18, 20, 23:

  A. 15.5, 18, 18

  B. 15, 14, 18

  C. 14, 16, 18

  D. 15, 12, 18

  E. 15.5, 16, 18

  Correct Answer: E