For each of the scenarios below decide if the data is paired or not paired. You have 1 attempt on each selection. 1. Compare pre-test (beginning of semester) and post-test (end of semester) scores for 300 students, assuming all students put their name on the exam. 2. Investigate gender-related salary gap by comparing salaries of 30 randomly selected men and women. 3. Asses the effectiveness of an exercise regimen by comparing the before and after muscle mass of 30 subjects. 4. We're interested to see the difference in temperature between Fort Collins and Denver. We choose a random sample of 30 days, and record the average temperature on each of those same days. 5. CSU would like to determine whether there is a difference in GPA for students involved in at least one club versus students who are not involved in any clubs. They take a random survey of 200 students from CSU and ask for their GPA and if they are in at least one club. 6. We randomly sample the price of 20 items from Walmart stores. Then we go on Amazon and record the price for each of those same 20 items