12-13. Two different methods were used to determine the fat content (expressed as a percent) in different samples of premium vanilla ice cream. Both methods were used on scoops taken from the same container. Does one of these methods yield higher readings on the average? Use α = 0.01.
Sample: 1 2 3 4 5 6 7 8 9 Method 1: 20 21 18 17 22 21 23 19 16 Method 2: 17 20 18 16 17 20 19 21 21