TABLE 10-13 A Quality Control Engineer Is in Charge of the Manufacture

question 6

True/False

TABLE 10-13
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 10-13, the same decision would be made if this had been a two-tailed test at a level of significance of 0.01.

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Definitions:

Categorizing Concepts

The mental process of grouping objects, ideas, or information into classes or categories based on common characteristics or attributes.

Prototype Model

A way of thinking about concepts: Within each category, there is a best example—a prototype—for that category.

Concepts

Abstract ideas or mental symbols that are used to represent, organize, or understand objects, events, or thoughts based on common properties or characteristics.

Prototype

A typical or initial model of something from which other forms are developed or copied, often used in the context of design and innovation.