Question 5 (1 point) Let A track coach wanted to see how much faster his runners would run, it they wore a new brand of running shoe. He randomly selected 8 runners and had each of them run the 100yard dash, twice. They wore their usual shoes to run the race on one day. and they wore the new shoe to run the race on another day. The coach randomly selected the day each runner would wear the new shoe. The times were recorded and the coach subtracted each runner's times in the order USU Ell shoe n EW ShOE{\"version":"1.1","math":"'ltext{usual shoe}-'itext{new shoe}"} before calculating his condence interval. A confidence interval for which of the following would be most appropriate for this study\