\f2. Consider the example given in the previous question. Compute the least significant differences at the 5% level and identify where there is evidence of a difference in expected sales volume between the four display locations.A marketing manager for a popular supermarket chain is investigating how the position of a new product within the store can help boost sales. Each of the 26 supermarket in the study displays the product in one of 4 possible locations and records how many units of the new product they have sold. Sample statistics of the sales volume data within each display location are provided in the table below: DiSplay Location Size Mean Variance A: Next to the till 7 186 89 B: At the end of an aisle 4 171 70 C: Near the shop entrance 6 180 86 D: Amongst similar products 9 188 87 Overall 26