A Quality Analyst Wants to Construct a Control Chart for Determining

question 16

Multiple Choice

A quality analyst wants to construct a control chart for determining whether four machines, all producing the same product, are under 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: $$\begin{array} { l c } \text { Machine } & \text { Total Defectives } \\\hline \# 1 & 23 \\\# 2 & 15 \\\# 3 & 29 \\\# 4 & 13\end{array}$$ 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:

Propinquity Effect

The tendency for people to form friendships or romantic relationships with those whom they encounter often, making physical proximity a factor in relationship formation.

Waist-to-Hip Ratio

A measurement used to assess the distribution of body fat, calculated by dividing the waist circumference by the hip circumference.

Income

Money received, typically on a regular basis, for work or through investments.

Preferences

Individual choices or inclinations towards certain opinions, objects, or outcomes over others.