Given the Following Process Control Data for a Quality Attribute $$\begin{array} { l r } \text { Sample } & \text { Defectives } \\\hline \# 1 & 36 \\\# 2 & 32 \\\# 3 & 52\end{array}$$

question 95

Short Answer

Given the following process control data for a quality attribute (three samples of size 400 each): $$\begin{array} { l r } \text { Sample } & \text { Defectives } \\\hline \# 1 & 36 \\\# 2 & 32 \\\# 3 & 52\end{array}$$ If the process is known to produce 11 percent defectives on average, what is the mean of the sampling distribution of sample proportions for whenever this process is under control? The standard deviation?

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Definitions:

Ergonomist

A professional who designs or modifies workplaces, equipment, and processes to fit the user, aiming to increase efficiency and reduce discomfort or injury.

Cognitive Psychologist

A professional in psychology who studies mental processes including perception, memory, thought, and problem-solving.

Aversion

A strong dislike or disinclination towards something, often used in psychological contexts to describe responses to unpleasant stimuli.

Ergonomic Principle

Refers to design considerations that maximize productivity by minimizing operator fatigue and discomfort.