Question

PLEASE HELP FAST!! IT IS URGENT!!

A shoe company wants to determine if the new tread on its top line of running shoes lasts longer than the original tread. The company recruits 50 runners for a study. Each runner will perform their typical workout wearing one shoe with the original tread on one foot and another shoe with the new tread on the other foot. The foot that wears the new type of tread will be decided by flipping a coin. After one month, the runner will wear the new type of tread on the opposite foot. At the end of the second month, the difference in tread wear (New - Original) will be calculated. What type of sampling is described in this study? What is the appropriate inference procedure?
O one-sample t-test for u
O one-sample z-test for p
one-sample t-test for diff
two-sample t-test for new original​

Answer 1

The correct answer is: one-sample t-test for diff. The appropriate inference procedure is to use a one-sample t-test to compare the difference in tread wear after two months between the shoe with the new type of tread and the original.