The admin team surveys Stats 250 students to ask about the number of hours they spent working on labs in RStudio Cloud at the beginning of the term versus the end of the term, and will randomly sample a large number of responses in order to estimate the average difference in the number of hours spent working on labs in RStudio Cloud. Which parameter/situation are we investigating?

Multiple Choice:

p

p1 - p2

chi-square goodness-of-fit

chi-square test of independence

mu

mu1 - mu 2

mu d

b 1