Provide an Appropriate Response

Provide an appropriate response.
-A company which designs sports shoes has made an improvement to their popular running shoe. They hope that athletes wearing the new running shoe will be able to run faster over short
Distances. They will use a paired sample to determine whether the mean time to run 100 meters for
Sprinters wearing the new running shoe is less than the mean time to run the 100 meters for
Sprinters wearing the old running shoe. Identify the paired-difference variable for the proposed
Hypothesis test.

A) Difference between time to run 100 meters for a randomly selected sprinter wearing the new running shoe and time to run 100 meters for a randomly selected sprinter wearing the old
Running shoe
B) Difference between time to run 100 meters for a sprinter wearing the new running shoe and time to run 100 meters for the same sprinter wearing the old running shoe
C) Difference between mean time to run 100 meters for sprinters wearing the new running shoe and mean time to run 100 meters for sprinters wearing the old running shoe
D) Difference between time to run 100 meters for a sprinter wearing the new running shoe and time to run 100 meters for the same sprinter after a training period