Find the Margin of Error $\begin{array} { l l l l l l } 77.9 & 89.1 & 80.7 & 78.6 & 74.4 & 82.0 \end{array}$

question 64

Multiple Choice

Find the margin of error.
-The principal randomly selected six students to take an aptitude test. Their scores were: $\begin{array} { l l l l l l } 77.9 & 89.1 & 80.7 & 78.6 & 74.4 & 82.0 \end{array}$
Determine a 90 percent confidence interval for the mean score for all students.

• A) \(84.54 < \mu < 76.36\)
• B) \(84.64 < \mu < 76.26\)
• C) \(76.36 < \mu < 84.54\)
• D) \(76.26 < \mu < 84.64\)

---

Definitions:

User Costs

The expense of using a good or service, including both the actual cost of obtaining it and the opportunity cost of forgoing the next best alternative.

Nonrenewable Resource

A natural resource that cannot be replenished at the same rate it is consumed, such as fossil fuels, minerals, and certain metals.

Future Profits

Anticipated earnings or profits that a business expects to generate in the future based on current plans and projections.

Current Extraction

The process of removing natural resources from the environment for immediate use.