A Quality Control Engineer Is in Charge of the Manufacture $\chi$

question 107

Multiple Choice

A quality control engineer is in charge of the manufacture of computer disks.Two different processes can be used to manufacture the disks.He suspects that the Kohler method produces a greater proportion of defects than the Russell method.He samples 150 of the Kohler and 200 of the Russell disks and finds that 27 and 18 of them,respectively,are defective.If Kohler is designated as "Group 1" and Russell is designated as "Group 2," which of the following tests will you use to find out if the Kohler method is worse than the Russell method?

• A)Paired t test.
• B)Z test for difference in proportions.
• C)\(\chi\) ² test for difference in proportions.
• D)Kruskal-Wallis rank Test.

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Definitions:

Positive Reinforcement

A technique used in behavior psychology to increase the likelihood of a desirable behavior by rewarding it.

Classical Conditioning

A learning process that occurs when two stimuli are repeatedly paired; a response that is at first elicited by the second stimulus is eventually elicited by the first stimulus alone.

Peer Learning

An educational approach where individuals learn from the expertise and insights of their equals or colleagues.

Cooperative Learning

An educational approach involving groups of students working together to solve a problem or achieve a common goal.