A Quality Analyst Wants to Construct a Control Chart for Determining

question 52

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: $$\begin{array} { l c } \text { Machine } & \text { Total Defectives } \\\hline \# 1 & 23 \\\# 2 & 15 \\\# 3 & 29 \\\# 4 & 13\end{array}$$ For upper and lower control limits of .026 and .014, which machine(s) , if any, appear(s) to be out-of-control for process proportion of defectives?

• A) machine #3
• B) machine #4
• C) machines #3 and #4
• D) machines #2 and #3
• E) none of the machines

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Definitions:

Prices and Wages

Refers to the levels of remuneration for labor and the cost of goods and services in an economy, which can impact inflation and purchasing power.

Natural Rate

The rate of a quantity, such as unemployment or interest, that prevails when the economy is in a long-term equilibrium.

Classical Dichotomy

The theoretical separation of nominal and real variables in classical economics, suggesting that changes in the money supply only affect nominal variables.

Inflation Rate

An upward movement in the overall price level of goods and services in an economy over time.