A Professor Was Interested in Determining Whether the Prices of New

question 7

Multiple Choice

A professor was interested in determining whether the prices of new textbooks in the bookstore were higher than if purchased online. She selected 6 textbooks and priced each at the bookstore and online. Which statement is true at 5% significance level?

• A) There is not enough evidence to suggest that the prices of new textbooks in the bookstore were higher than if purchased online, on average.
• B) There is strong evidence that the prices are higher in the bookstore.
• C) We are 95% sure that the prices are higher online.
• D) There is strong evidence that the prices in the bookstore and online are different.
• E) We are 95% sure that the prices in the bookstore and online are exactly the same.

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Definitions:

Broken Back

A term sometimes used in medical or veterinary contexts to describe a fracture or series of fractures along the spine.

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Standpipe

A vertical pipe designed to provide a point of access to a water supply, often used by firefighters for hose connections.