You are interested in the effects of caffeine intake and sleep deprivation on mental alertness. Ten participants come to the lab on four separate occasions and complete a computerized assessment of mental alertness where a higher score indicated better performance. The participants are tested after each of four conditions ( 1 condition/visit to the lab) and the order of presentation was counterbalanced across participants. - 30 min after drinking 2 cups of decaf coffee with no caffeibe and after NOT having slept for 12 hours - 30 min after drinking 2 cups of regular coffee WIIH caffeine and after NOT having slept for 12 hours - 30 min after drinking 2 cups of decaf coffee with no caffeine and after having slept for 7 hours - 30 min after drinking 2 cups of regular coffee WIIH caffeine and after having slept for 7 hours What type of analysis should be done?