A/B Test for MuscleHub question 5 and 7 identical?

Are question 5 and 7 in the A/B Test for MuscleHub challenge project not identical?

Question 5:
Having calculated the difference in who turned in an application between groups, determine if this difference is statistically significant.
(Groups being group A and group A, presumably)

Question 7.
Calculate if the difference between the following groups is statistically significant:
The customers that picked up an application and took a fitness test.
The customers that did not take a fitness test and picked up an application.
(The customers that took a fitness test are group A, and the customers that did not took a fitness test are group B.)

What is the difference?