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

question 153

Short Answer

TABLE 10-12
A quality control engineer is in charge of the manufacture of USB flash drives.Two different processes can be used to manufacture the flash drives.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 flash drives 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 flash drives that are defective.

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Definitions:

Innovation

The act of introducing something new or making improvements to existing products, services, methodologies, or technologies.

Widespread Diffusion

The broad and extensive spread of something, such as a technological innovation or cultural idea, across a wide area or among a large number of people.

Oligopolists

Firms or entities that are part of an oligopoly, a market dominated by a small number of large suppliers, leading to limited competition.

R&D

Research and Development; activities in connection with corporate or governmental innovation, encompassing the work towards the development of new products or procedures.