There are four entrances to a large office building in downtown Halifax. The building maintenance supervisor would like to know if the entrances are equally utilized. To investigate, 400 people were observed entering the building. The number using each entrance is reported below. Entrance Frequency Main Street 150 Broad Street 150 Cherry Street 50 Walnut Street 50 Total 400 a. State the decision rule. Use the 0.01 significance level. Appendix B.6. (Round the final answer to 3 decimal places.) H0: P1 = P2 = P3 = P4 H1: The proportions are not equal. df = 3 Reject H0 if 2 > . b. At the 0.01 significance level, is there a difference in the use of the four entrances? (Round (fo - fe)2/fe to 2 decimal places. Negative answers should be indicated by a minus sign.) Entrance fo fe fo - fe (fo - fe)2/fe Main Broad Cherry Walnut Total 0 c. What is your decision regarding H0? H0 is (Click to select) . The entrances (Click to select) equally preferred