Instruction 10-14 A Quality Control Engineer Is in Charge of the Manufacture

question 122

Short Answer

Instruction 10-14
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 Instruction 10-14,construct a 99% confidence interval estimate of the difference in proportion between the Kohler and Russell disks that are defective.

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Definitions:

Hypothalamic-Pituitary-Adrenal

A major part of the neuroendocrine system that controls reactions to stress and regulates many body processes including digestion, immunity, mood, sexuality, and energy usage.

Autonomic Stress Response

The body's automatic reaction to stress, involving the sympathetic nervous system and resulting in physiological changes such as increased heart rate and blood pressure.

Posttraumatic Stress Disorder

A psychiatric disorder caused by encountering or observing a horrifying incident, marked by recurring flashbacks, nightmares, and heightened anxiety.

Increased Arousal

A state marked by heightened physiological and psychological activity, often as a response to a stimulus or stress.