I have a raw dataset of a bunch of cereals and many other variables of them. One variable is the manufacturer, so that column is sorted into K, G, B, etc. (The variable for each manufacturer). I have another variable of fat. I need to test the hypothesis that General Mills (G) has a higher fat content than Kellogs (K). How would I do this? I know I need to use the ttest procedure, but I don't know how. Please note I only have to compare the fat contents of those two manufacturers, which are variables randomly in the dataset as well. Thanks.
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