McGraw-Hill Connect Math ALEKS Calories in Fast-Food Sandwiches Three popular fast-food restaurant franchisees specializing in burgers were surveyed to find out the number of calories in their frequently ordered sandwiches. Use a = 0.05 to test the differences between the pairs of means. Assume the variables are normally distributed, samples are independent, and the population variances are equal. FF #1 FF#2 FF#3 710 780 910 970 630 910 880 620 680 840 900 1300 890 1030 ola X1 = 850 X, = 764 X, =966 S = 11,666.67 $3 = 18,330 $ = 50,930 Send data to Excel Part: 0 / 4 Part 1 of 4 (a) Calculate the within-group variance s, Round the answer to at least two decimal places