A Major Electronics Store Chain Is Interested in Estimating the Average

question 21

Multiple Choice

A major electronics store chain is interested in estimating the average amount its credit card customers spent on their first visit to the chain's new store in the mall. Fifteen credit card accounts were randomly sampled and analyzed with the following results: $\bar { x }$ = $50.50 and s² = 400. A 95% confidence interval for the average amount the credit card customers spent on their first visit to the chain's new store in the mall is:

• A)$50.50 \(\pm\) $9.09.
• B)$50.50 \(\pm\) $10.12.
• C)$50.50 \(\pm\) $11.08.
• D)None of these choices.

Grasp the principles of system analysis in environmental sciences.

Recognize the diversity and roles of organisms in ecosystems.

Understand the impact of human activities on ecosystems and the natural cycles.

Identify the technology used in environmental science for data collection and analysis.

---

Definitions:

Compute

The process of calculating or determining something by mathematical or logical methods.

Miles Per Hour

A measurement of velocity indicating how many miles are covered within an hour.

Compute

Refers to the action of performing mathematical calculations or processing data using a computer or computational device.

Imperfect Price Signals

Situations in markets where prices do not fully reflect all available information, leading to inefficiencies in allocation of resources.