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? 
Definitions:
Guidebook
A book with information or instructions to help users understand or accomplish something, often related to travel or specific subjects.
Language
A system of communication used by a particular community or country, consisting of written, spoken, or signed words and the rules for combining them.
Economic Theory
A framework or model that attempts to explain the workings of economic systems through the analysis of various variables and their relationships.
Option
A financial derivative that gives the buyer the right, but not the obligation, to buy or sell an asset at a specific price on or before a certain date.
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