Use the Given Degree of Confidence and Sample Data to Find

question 123

Multiple Choice

Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ.
Assume that the population has a normal distribution. Round the confidence interval limits to one more decimal place
than is used for the original set of data.
-The amounts (in ounces) of juice in eight randomly selected juice bottles are: $\begin{array} { l l l l } 15.2 & 15.1 & 15.9 & 15.5 \end{array}$
$\begin{array} { l l l l l } 15.6 & 15.1 & 15.8 & 15.0 \end{array}$
Find a $98 \%$ confidence interval for the population standard deviation $\sigma$ .

• A) \(0.21 \mathrm { oz } < \sigma < 0.71 \mathrm { oz }\)
• B) \(0.20 \mathrm { oz } < \sigma < 0.71 \mathrm { oz }\)
• C) \(0.21 \mathrm { oz } < \sigma < 0.82 \mathrm { oz }\)
• D) \(0.22 \mathrm { oz } < \sigma < 0.86 \mathrm { oz }\)

---

Definitions:

Direct Labor

The labor costs directly associated with the production of goods or services, including wages of workers directly involved in production.

Manufacturing Overhead

All manufacturing costs that are not directly related to the production of a product, including indirect materials, labor, and other expenses.

Insurance

A contractual agreement where one party, the insurer, agrees to compensate another, the insured, for loss on a specified subject by specified perils in return for a premium.

Work In Process Inventory

Represents the cost of unfinished goods that are in the production process at a certain point in time.