There has been an alcohol war between Bob and Len for some time now. The following results were observed. Does the data indicate that the average purchases at Len's exceed, on average, those at Bob's by more than 8.50 dollars? The data is given in the file below. Use a = 0.092 for all calculations. Download .csv file And is summarized here Bobs Booze Lens Liquor Emporium 46 39 average cost 49.79 58.63 variance of cost 9.13 4.97 (a) Form the correct hypothesis A. Ho : MLen - MBob = 8.5 HA : MLen - MBob > 8.5 O B. Ho : MLen - MBob = 8.5 HA : MLen - HBob # 8.5 O C. Ho : MLen = MBob HA : MLen F MBob O D. Ho : MLen = MBob HA : MLen > MBob O E. Ho : MLen = MBob HA : MLen OF. Ho : MLen - MBob = 8.5 HA : HLen - MBob