A ____ from a sample is used to estimate a population _____. The two words that best fill these blanks are:

• A.statistic, parameter
• B.item, value
• C.value, statistic
• D.parameter, value
• E.parameter, statistic

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In a resolution III fractional factorial experimental design, main effects are confounded with:

• A.no other effects
• B.two factor and higher interactions
• C.three factor and higher interactions
• D.one factor interactions

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A Belt has determined that the inventory of repair parts at a rework station can be reduced by 45%.
According to Cost of Poor Quality (COPQ) definitions inventory reduction would be considered
_______________.

• A.Hard Savings
• B.Median Savings
• C.Soft Savings
• D.COPQ efficiency

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Ideally, project team members should be representatives of

• A.experts in process management
• B.experts in quality improvement
• C.workers who have no vested interest in the project
• D.workers from areas affected by the project

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SCENARIO A Six Sigma team is measuring the moisture content of corn starch as it leaves the conveyer belt of a dryer. They collect one sample four cups of starch at times indicated in the chart at fixed locations labeled A, B, C, and D across the end of the belt. See the diagram below.

After some work on the dryer, additional data are collected which when plotted looks like this:

Which type of variation dominates?

• A.within sample
• B.sample to sample within the hour
• C.none of the above
• D.hour to hour

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