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

question 69

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, the value of the test statistic is ________.

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Definitions:

Arithmetically

Pertaining to arithmetic, the branch of mathematics dealing with the properties and manipulation of numbers.

Geometrically

In a manner that relates to geometry, the branch of mathematics concerned with the properties and relations of points, lines, surfaces, and solids.

Concentric Zone Model

A theory in urban sociology that suggests cities grow in a series of rings emanating from the downtown area.

Business District

A region within a city where the bulk of office buildings, commercial properties, and financial institutions are located.