QUESTION: 69

When comparing two vendors’ machines it is found that a sample of 1000 parts from machine A has 23 defectives and a sample of 1300 parts from machine B has 36 defectives. Do the data indicate that machine B has a higher rate of defectives?

yes
no
all of the above

Answer(s): A

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QUESTION: 70

The Toronto plant produces appliances in the following distribution: Type A 23% Type B 42% Type C 35% A random sample of 300 appliances from the Texas plant has the following distribution: Type A 73 Type B 111 Type C 116 Is the distribution of appliances at the Texas plant the same as that at the Toronto plant?

yes
no

Answer(s): B

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QUESTION: 71

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.

Which type of variation dominates? (Hint: Plot the points on the graph above.)

within sample
sample to sample within the hour
hour to hour
none of the above

Answer(s): A

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QUESTION: 72

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.

Which type of variation dominates?

within sample
sample to sample within the hour
hour to hour
none of the above

Answer(s): B

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QUESTION: 72

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