A Quality Analyst Wants to Construct a Control Chart for Determining

question 124

Multiple Choice

A quality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are under control with regard to a particular quality variable. Accordingly, he sampled four units of output from each machine, with the following results: $$\begin{array} {r } { \text { Measurements } } \\\begin{array} { l l l l l } \text { Machine } & \\\hline \# 1 & 17 & 15 & 15 & 17 \\\# 2 & 16 & 25 & 18 & 25 \\\# 3 & 23 & 24 & 23 & 22\end{array}\end{array}$$ For upper and lower control limits of 23.29 and 16.71, which machine(s) , if any, appear(s) to have an out-of-control process mean?

• A) machine #1
• B) machine #2
• C) machine #3
• D) all of the machines
• E) none of the machines

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Definitions:

Program Modification

The process of making changes or updates to software or a set of instructions to correct errors or enhance functionality.

Energized

Refers to equipment that is supplied with electrical power or is in a state of being electrically charged.

Sequencer

A device or software that arranges and triggers a series of events or operations in a particular order.