write null and alternative hypothesis on A physical therapist wants to know which of three exercise machines increases heart rate the most. She recruits a group of cardiac rehabilitation patients into her study. The participants' heart rates are recorded after they use three types of exer- cise equipment for 10 minutes. Each piece of equipment is tried on a different visit, and the order of use is randomized for each person. Is there a difference between the three pieces of exercise equipment in terms of the effect on heart rate? Person Machine 1 Machine 2 Machine 3 1 2 165 214 111 110 88 94 165 224 131 188 133 185 65 108 149 68 118 176 8 124 176 240