Q1. The researcher claim that the average cost of men's athletic shoes is less than RM80. He selects a random sample of 36 pairs of shoes from a catalog and finds the following costs. Test the hypothesis 0.10 level of significance. 60 70 75 55 80 55 50 40 80 70 110 65 80 85 85 45 75 60 90 90 50 95 120 90 75 85 80 60 60 95 110 85 45 90 70 70