Do people really like Hershey's chocolate over Nestle's. Research published by the Associated Press stated that Hershey's chocolate was the most nationally preferred brand so we want to test this hypothesis with our own sample. Each person in the study eats a sample of Hershey chocolate and gives a rating of how much they like it on a scale from 0 (hate it) to 100 (love it). Then each person tries a sample of Nestle chocolate and rates it on the same 0 to 100 scale. Their scores/ratings can be seen below. We want to know if Hershey's chocolate is really preferred more than Nestle. Test with = .05. Hershey Rating Nestle Rating 15 5 90 77 8575 7371 6254 3916 Calculate and report the 95% confidence interval for the mean difference