SIX SIGMA Lean Six Sigma Black Belt Set 3

1.

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).

Testing the identity of two populations Focuses on equality of the Median of the two populations Less powerful than the traditional "t-test" More widely applicable than the traditional "t-test"

2.

Assessing process proportion as opposed to evaluating a process with respect to a set target can be done using which of these?

Process proportion equals some value range Process proportion equals some desired value Target is current Proportion of the tail is equal

3.

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

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4.

Contingency Tables are used to test for association, or dependency, between two or more classifications.

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5.

For the data shown here which statement(s) are true? (Note: There are 2 correct answers).

With 95% confidence, we cannot conclude if the samples are from three Normal Distributions. With greater than 95% confidence, we conclude the samples are from Non-normal Distributions. If we wanted to compare the Central Tendencies of these three samples we would use the one way ANOVA test. If we wanted to compare the Central Tendencies of these three samples we could use Mood's Median test.

6.

A(n) ______________ is best used to compare a Machine 1 average quality characteristic to the same quality characteristic of Machine 2.

F test 1-Sample t-test 2-Sample t-test ANOVA test

7.

For the data set shown here which of these statements is/are true?

Hypothesis Testing of Means or Medians cannot be done since there are an unequal number of observations for the 3 samples A Paired T-test would be applicable for comparing Grade B and Grade A since they follow each other in the data set Grade A has the lowest sample Mean of the 3 samples Grade A has a higher sample Mean than Grade B

8.

Review the analysis shown here. Which statements are true about the process? (Note: There are 3 correct answers).

The initial focus for this project would be to determine why the thicknesses are so frequently too low. The majority of the process is closer to the lower specification limit. This process is described with the Weibull Distribution. The process has more problems with Variation than Centering. The process follows a non-normal distribution with the given data.

9.

A Lean Six Sigma project is attempting to reduce inventory days. The Process Capability will be monitored as part of the Control Phase to track the sustainability of the improvement. Which distribution type is best used for performing the Capability Analysis?

Weibull Distribution Normal Distribution Exponential Distribution Logistic Distribution Gaussian Distribution

10.

What conclusion is most correct about the Experimental Design shown here with the response in the far right column?

No factor has enough statistical confidence greater than 95% to have an impact on the response rate Constant, Adv and Bev are the only factors statistically affecting the response rate with 95% confidence or more If the Adv is increased from the low level to the high level, the response rate increases The response level is statistically concluded to only need the Adv and Bev factors set at the low level to get the largest response rate This design does not have enough experimental runs to conclude anything as evidenced by the lack of P-values in the MINITABTM output

SIX SIGMA Lean Six Sigma Black Belt Set 3

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SIX SIGMA Lean Six Sigma Black Belt Set 3

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