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

question 197

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 90% confidence interval estimate of the difference in proportion between the Kohler and Russell disks that are defective.

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Definitions:

Origin

The point or place where something begins, arises, or is derived, often used in mathematics to denote the starting point of a coordinate system.

Driver

In general terms, an individual who operates and controls a vehicle.

University

An institution of higher education and research, which awards academic degrees in various disciplines and provides both undergraduate education and postgraduate education.

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Pertaining to or originating from a country other than one's own.