A Local Retail Business Wishes to Determine If There Is $\neq$

question 87

Multiple Choice

A local retail business wishes to determine if there is a difference in preferred indoor temperature between men and women. A random sample of data is collected, with the following results (note: there are slight differences between Excel and MegaStat output in this test) :
Using a 0.05 level of significance, can we conclude that there is indeed a difference in the temperature that men prefer compared to women?
What is the null hypothesis if we assume men to be group 1 and women group 2?

• A) µ₁ = µ_2, or µ_d = 0
• B) µ₁ \(\neq\) µ_2, or µ_d \(\neq\) 0
• C) µ₁ - µ₂ \(\le\) 20
• D) µ₁ - µ₂ > 20

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Definitions:

Scatter Diagram

A graphical representation used to visualize the relationship between two quantitative variables, showing how one variable affects the other.