For Exercises 7.1 and 7.2, see page 360; for 7.3 and 7.4, see page 362; for 7.5 to 7.7, see page 365; for 7.8 and 7.9, see page 368; for 7.10 and 7.11, see page 371; and for 7.12 and 7.13, see page 372.
7.11 95% confidence interval for the difference in taste.
To a restaurant owner, the real question is how much difference there is in taste. Use the preceding data to give a 95% confidence interval for the mean difference in taste scores between oil-free and hot-oil frying.
7.11