In an Effort to Estimate the Mean Dollars Spent Per

question 77

Multiple Choice

In an effort to estimate the mean dollars spent per visit by customers of a food store, the manager has selected a random sample of 100 cash register receipts. The mean of these was $45.67 with a sample standard deviation equal to $12.30. Assuming that he wants to develop a 90 percent confidence interval estimate, which of the following is the margin of error that will be reported?

• A) About ±$2.02
• B) Nearly $50.20
• C) $1.645
• D) About $1.43

---

Definitions:

North America

A continent located in the Northern Hemisphere, largely in the Western Hemisphere, and bounded by the Arctic Ocean, Atlantic Ocean, Pacific Ocean, and the Caribbean Sea.

Europe

A continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere, known for its rich history, cultural diversity, and economic influence.

Japan

An island country located in East Asia known for its rich culture, advanced technology, and historical significance.

Chief Regulator

The main or leading authority responsible for overseeing and enforcing rules and regulations within a sector or industry.