TABLE 10-12 A Quality Control Engineer Is in Charge of the Manufacture

question 183

Short Answer

TABLE 10-12
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," perform the appropriate test at a level of significance of 0.01.
-Referring to Table 10-12, construct a 95% confidence interval estimate of the difference in proportion between the Kohler and Russell disks that are defective.

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Definitions:

Positive Deviance

An unorthodox or unexpected behavior that deviates from the norm but results in a desirable outcome.

Rule-breaking Behavior

Actions that violate established guidelines, norms, or laws, often reflecting disregard for societal or organizational rules.

Prescription Medications

Refers to drugs that cannot be legally obtained without a prescription from a physician to treat and manage specific medical conditions.

Self-fulfilling Prophecy

A forecast that, whether through direct or indirect means, fulfills itself by creating a loop of positive feedback between what is believed and the actions taken.