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:

Marine Sediments

Particles of organic and inorganic matter that accumulate in a loose, unconsolidated form on the ocean floor.

Internal Shear

Internal shear refers to the internal deformation of a material or geological structure due to shear stress.

Glacier

A large, slow-moving mass of ice formed by the accumulation and compaction of snow on mountains or near poles.

Bedrock

The solid rock layer beneath the soil or superficial material, serving as the foundation for geological features and construction.