A Quality Analyst Wants to Construct a Control Chart for Determining

question 109

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 estimate of the process proportion of defectives?

• A) .08
• B) .06
• C) .04
• D) .02
• E) .01

---

Definitions:

Covalent Bond

Type of chemical bond in which two atoms share a pair of electrons. Can be polar or nonpolar.

Hydrogen Bond

A modest bond formed between two molecules as a result of the electrostatic interaction between a proton found in one molecule and an atom that is electronegative in the other molecule.

Opposite Charge

A fundamental principle in physics and chemistry where two entities have electrical charges of different signs, such as positive and negative, attracting each other.

Chemical Bond

The force of attraction between atoms or ions that enables the formation of chemical compounds.