4 1 point A new practice regiment was developed to help increase the cardio of track runners. In a sample of 50 runners, their mile completion time was recorded before starting the new regiment. After a month with this new practice regiment, their mile completion time was recorded again. A comparison was then made between the completion times from before and after. What type of experimental design is being used? O Matched pair O Randomized block O Completely randomized O Stratified Previous Next