The Following MINITAB Output Presents a Confidence Interval for a Proportion

question 116

Multiple Choice

The following MINITAB output presents a confidence interval for a proportion.
$\begin{array}{crrcc}\hline \text { Variable } & \mathrm{X} & \mathrm{N} & \text { Sample p } & 95 \% \mathrm{CI} \\\mathrm{x} & 117 & 159 & 0.735849 & (0.667319,0.804379) \\\hline\end{array}$
Use the information in the display to construct a $98 \%$ confidence interval for $p$ .

• A) (0.655, 0.817)
• B) (0.678, 0.793)
• C) (0.667, 0.804)
• D) (0.646, 0.826

---

Definitions:

Machine-Hours

A measure of production time, representing the number of hours machines are operated in the production process.

Variable Manufacturing Overhead

Costs in the manufacturing process that fluctuate with production volume, such as utilities or materials, contrasting with fixed overhead costs.

Plantwide Predetermined

This typically involves a single overhead rate calculated for an entire manufacturing plant, used to allocate overhead costs to products.

Manufacturing Overhead

Indirect factory-related costs that are incurred when producing a product, such as the cost of utilities, maintenance, and salaries of supervisors.