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 data to give a 95% confidence interval for themean difference in taste scores between oil-free and hot-oil frying. (see attached 1st question) This question was answered but differs from the back of the book. I am confused on what is the correct answer

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Author:Amos Gilat
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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 data to give a 95% confidence interval for themean difference in taste scores between oil-free and hot-oil frying. (see attached 1st question)

This question was answered but differs from the back of the book. I am confused on what is the correct answer

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. 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
7.10
tasted first.
Expert
1
2
3
4
Hot oil:
78
84
62
73
63
Oil free:
75
85
67
75
66
Transcribed Image Text: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. 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 7.10 tasted first. Expert 1 2 3 4 Hot oil: 78 84 62 73 63 Oil free: 75 85 67 75 66
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