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.
7.10 Oil-free deep fryer.
Researchers at Purdue University are developing an oil-free deep fryer that will produce fried food faster, healthier, and safer than hot oil.4 As part of this development, they ask food experts to compare foods made with hot oil and their oil-free fryer. Consider the following table comparing the taste of hash browns. Each hash brown was rated on a 0 to 100 scale, with 100 being the highest rating. For each expert, a coin was tossed to see which type of hash brown was tasted first.
| Expert | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |
| Hot Oil | 78 | 83 | 61 | 71 | 63 |
| Oil free | 75 | 85 | 67 | 75 | 66 |
Is there a difference in taste? State the appropriate hypotheses, and carry out a matched pairs test using .