A medical equipment dealer wishes to establish whether there is a difference between two representatives of its products. The first is located in the central zone of the country and the second in the western zone. Below is a table with monthly sales in each of the regions for a period of 10 months. Central Agency Western Agency ea; :3 Using a signicance level of 0.1, is there a difference between the variations in sales for each region? Perform a 5step hypothesis test ford Fisher's test