Marketing Managers Marketing Research Advertising CO a. Use a = 0.05 to test for a significant difference in perception among the three groups. Compute the values identified below (to 2 decimals, if necessary). X Sum of Squares, Treatment Sum of Squares, Error X Mean Squares, Treatment Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). X The p-value is less than 0.01 What is your conclusion? Conclude the mean perception scores for the three groups are not all the same b. Using a = 0.05, determine where differences between the mean perception scores occur. Calculate Fisher's LSD value (to 2 decimals)