A Quality Analyst Wants to Construct a Control Chart for Determining

question 79

Multiple Choice

A quality analyst wants to construct a control chart for determining whether four machines, all producing the same product, are in control with regard to a particular quality attribute. Accordingly, she inspected 1,000 units of output from each machine in random samples, with the following results: $$\begin{array} { c c } \text { Machine } & \text { Total Defectives } \\\hline \# 1 & 23 \\\# 2 & 15 \\\# 3 & 29 \\\# 4 & 13\end{array}$$
What is the sample proportion of defectives for machine #1?

• A) .023
• B) .02
• C) .0115
• D) .0058
• E) .005

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Definitions:

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A medical term for a heart attack, occurring when blood flow to a part of the heart is blocked for a long enough time that part of the heart muscle is damaged or dies.

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Techniques or methods employed to manage stressful situations, emotional distress, or psychological challenges.

Health Club

A facility with exercise equipment and often offering health and wellness services, classes, and programs aimed at improving physical fitness.

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Assistance and encouragement provided by family members to one another, which can be emotional, financial, or physical.