Discuss the Applications of Confidence Interval Estimation
Use the Table

question 50

Multiple Choice

Discuss the applications of confidence interval estimation
Use the table below to answer the following question(s) .
The historical data of Velvetta Inc., a healthcare products manufacturer, have shown that in a production process for filling bottles of shampoo, variance in the volume is constant; however, clogs in the filling machine often affect the mean volume. The historical standard deviation is 5 milliliters. In filling 250-milliliter bottles, a sample of 20 found a meanvolume of 242 milliliters. $$\begin{array} { | l | l | } \hline \text { Velvetta Inc. Shamp o0 } & \\\text { Production } & \\\hline \text { Alpha Vahe } & 0.05 \\\hline \text { Standard Deviation } & 5 \\\hline \text { Sample Size } & 20 \\\hline \text { Sample Mean } & 242 \\\hline\end{array}$$
-From the table above, calculate the lower confidence interval estimate at a confidence level of 95%

• A) 239.49
• B) 240.16
• C) 239.81
• D) 240.04

---

Definitions:

Federal Government

The national level of government which has authority over all states within a country, responsible for the nation’s overall governance according to a set of laws or a constitution.

Local Governments

Administrative bodies for areas within a country that are smaller than a state or province, tasked with local policy making and administration.

Private Donations

Financial or material contributions given by individuals, organizations, or companies to private entities or causes without expecting anything in return.

Texting While Operating

The act of sending, reading, or writing text messages on a mobile device while engaged in operating a vehicle or machinery, often illegal due to safety concerns.