Six Sigma Six Sigma Certifications CLSSBB Questions & Answers

• Question 321:

  An x-bar and R chart is used to monitor a process. One week ago a new type of raw material was introduced and since that time 60 points have been plotted on the xbar chart and all are in the middle third of the chart. The corresponding 60 points on the R chart are all below the average range. This indicates that:

  A. the operator has been plotting the points incorrectly

  B. it is time to recalibrate the gage used

  C. it is time to recalculate the control limits

  D. the material manager should be asked to go back to the previous raw material so the charts will more accurately reflect the process

  Correct Answer: C

• Question 322:

  The average number of defects is 21.6. Find the upper control limit for the c-chart.

  A. 26.4

  B. 24.6

  C. 18.8

  D. 26.2

  E. none of the above

  Correct Answer: E

• Question 323:

  If the value of the test statistic had been 7.03, what action should have been taken regarding the null hypothesis?

  A. rejected

  B. accepted

  C. not rejected

  D. none of the above

  Correct Answer: A

• Question 324:

  This experimental design is:

  A. full factorial

  B. half factorial

  C. quarter factorial

  D. none of the above

  Correct Answer: B

• Question 325:

  The number of factors, levels and replications:

  A. 3, 3, 3

  B. 2, 3, 2

  C. 3, 2, 2,

  D. 3, 2, 3

  E. 2, 2, 2

  F. none of the above

  Correct Answer: D

• Question 326:

  An indication of the experimental error is available because the design has:

  A. multiple replications

  B. multiple levels

  C. multiple factors

  Correct Answer: A

• Question 327:

  If the value of the test statistic had been 0.185, what action should have been taken regarding the null hypothesis?

  A. rejected

  B. accepted

  C. none of the above

  D. all of the above

  Correct Answer: C

• Question 328:

  What is the value of the test statistic?

  A. 0.898

  B. 1.251

  C. 0.429

  D. 3.57

  E. none of the above

  Correct Answer: E

  Explanation: As per reference to the given table in the URL, the 0.05 at 6 is 2.447. Hence none of the answers are correct. Reference: http://www.medcalc.org/manual/t-distribution.php

• Question 329:

  Find sd:

  A. 0.2875

  B. 0.3502

  C. 0.2714

  D. 0.2295

  Correct Answer: D

• Question 330:

  Is this a left-tail, right-tail or two-tail test?

  A. no

  B. left-tail

  C. right-tail

  D. two-tail

  Correct Answer: C