3. The Medical Rehabilitation Foundation reports that the average cost of rehabilitation for stroke victims is $24,672. To see if the average cost of rehabilitation is different at a large hospital, a researcher selected a random sample of 35 stroke victims and found that the average cost of their rehabilitation was $25,266 with a standard deviation of $3.251. Can we conclude that the average cost at a large hospital is different at a 1% level of signicance? 3. Step1