we want to know if there is a difference between the mean list price of a three bedroom home, μ3, and the mean list price of a four bedroom home, μ4. what is the alternative hypothesis?

Maximizing the difference between total revenue and total cost;

Tract homes;

This question is personal, so you can pick any answer. basically, it depends on what type of job you are applying for. if it's a basic job, like sales, you'll want to use a combination. if you've been working as an accountant for a while, then you would use chronological, with everywhere you worked, so the place where you're applying could call the people you worked for and they could give you  a recommendation. hope this !