17.1 The high school track team coach recorded the time taken for the 100-

yard dash by eight team members for three consecutive track meets during the regular season. His past experience informed him that they would improve their times throughout the season as they grew stronger and smarter. He had the idea that their level of improvement would qualify for statistical significance. Can you help the coach write the null and alternative hypotheses, select the correct test(s), interpret the analysis, and then answer his question? The data follow: