Joan has just moved into a new apartment and wants to purchase a new couch. To determine if there is a difference between the average prices of couches at two different stores, she collects the following data. Test the hypothesis that there is no difference in the average price. Use α = 0.05. 
Definitions:
Intelligence
The capacity for learning, understanding, and applying knowledge and skills, and the ability to adapt to new situations.
Predictive Validity
The degree to which a score obtained from a test or scale forecasts an individual’s future achievements on a similar activity.
Scholastic Aptitude Tests
Standardized tests used for college admissions in the United States, measuring reading, writing, and mathematics skills.
IQ Test
An IQ test is a standardized assessment designed to measure human intelligence and cognitive abilities relative to an age group.
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