WeiWei is interested in determining whether Georgia Southern Armstrong students during COVID-19 are feeling more stress than college students in general. She asks people to fill out a brief 10-item rating scale about stress, where a higher rating indicates more stress. She then compares her data to a nationwide sample of college students who have filled out the same measure (mu = 7.6); the population standard deviation is 1.3. Both of these variables are positively skewed. What is the goal of her research? Question 5 options: a) To determine potential differences between groups b) To determine a potential relationship between variables