1. You want to know the average amount of time that UT students spend signing up for classes during
their registration window. You plan to obtain a stratified random sample of students (by classification).
a. What is your variable of interest?
b. What is your population of interest?
c. What is your likely sampling frame?
d. What is your sample? What does it mean to say it is stratified?
e. What possible sources of bias (other than classification) might you need to avoid?