Six Sigma Six Sigma Certifications LSSMBB Questions & Answers

• Question 41:

  Following process modifications, the Null Hypothesis states that no improvement to the process has occurred. If we discover the Null Hypothesis Test was rejected when it was false that would be a(n) _______________.

  A. Type I Error

  B. Type II Error

  C. Type III Error

  D. Alpha Error

  Correct Answer: B

• Question 42:

  If the results from a Hypothesis Test are located in the "Region of Doubt" area, what can be concluded?

  A. Rejection of the Alpha

  B. We fail to reject the Null Hypothesis

  C. The test was conducted improperly

  D. We reject the Null Hypothesis

  Correct Answer: D

• Question 43:

  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

  E. If we wanted to compare the Central Tendencies of all three samples we could use the Mann-Whitney test

  Correct Answer: BD

• Question 44:

  Assessing process proportion as opposed to evaluating a process with respect to a set target can be done using one or more of these. (Note: There are 2 correct answers).

  A. Process proportion equals some desired value

  B. Process proportion equals some value range

  C. Target is current

  D. When we deal with Attribute type data

  E. Proportion of the tail is equal

  Correct Answer: AD

• Question 45:

  The relationship between a response variable and one or more independent variables is investigated and modeled by use of which of these?

  A. X-Y Matrix

  B. Baldridge Assessment

  C. Critical X's Definition

  D. Analysis of Variance (ANOVA)

  Correct Answer: D

• Question 46:

  An ANOVA used across many dependent variables could increase the Beta risk.

  A. True

  B. False

  Correct Answer: B

• Question 47:

  A Non-parametric Test should be used if just one distribution is not Normal out of the two or more gathered.

  A. True

  B. False

  Correct Answer: A

• Question 48:

  The Mann-Whitney test is a powerful test and is unique to situations from which of the choices listed? (Note: There are 2 correct answers).

  A. Testing the identity of two populations

  B. Focuses on equality of the Median of the two populations

  C. Less powerful than the traditional "t-test"

  D. More widely applicable than the traditional "t-test"

  Correct Answer: BD

• Question 49:

  Sally and Sara sell flower pots at their garage sale. Sally motivates Sara mentioning that they will sell a minimum of 22 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 18.2 pots per day were sold with a Standard Deviation of 0.9 pots. What is the Z value for this sales process?

  A. 1.23

  B. 1.62

  C. 2.11

  D. 4.22

  Correct Answer: D

• Question 50:

  Which of these might contribute to similar distributions having Unequal Variance?

  A. Extreme tails

  B. Outliers

  C. Multiple Modes

  D. All of the above

  Correct Answer: D