Susie believes that putting wax on her shoes will increase how fast she runs. She buys two of the exact pair of shoes and covers pair A with wax and leaves pair B alone. She will determine if the wax makes her faster by timing how long it takes her to run 50 yards. Susie runs exactly 50 yards once with pair A and after a 30 minute break again with pair B. She determined that she ran 50 yards in 6.2 seconds with pair A, and she ran 50 yards in 5.6 seconds with pair B
