A fast-food chain wants to evaluate the service at four restaurants. The customer service director for...
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A fast-food chain wants to evaluate the service at four restaurants. The customer service director for the chain hires six evaluators with varied experiences in food-service evaluations to act as raters. To reduce the effect of the variability from rater to rater, you use a randomized block design, with raters serving as the blocks. The four restaurants are the groups of interest. The six raters evaluate the service at each of the four restaurants in a random order. A rating scale from 0 (low) to 100 (high) is used. Table 1 summarizes the results. Raters Restaurant A Restaurant B Rater 1 67 Rater 2 87 Rater 3 83 Rater 4 63 a) Is there a difference among the mean ratings of the restaurants? (35) b) Is there a difference among the scores assigned by the raters? (35) c) Write how the data input for this RBD problem is made in MINITAB software. (30) 78 82 Restaurant C 92 58 Restaurant D 92 68 6 32 8 11 66 76 A fast-food chain wants to evaluate the service at four restaurants. The customer service director for the chain hires six evaluators with varied experiences in food-service evaluations to act as raters. To reduce the effect of the variability from rater to rater, you use a randomized block design, with raters serving as the blocks. The four restaurants are the groups of interest. The six raters evaluate the service at each of the four restaurants in a random order. A rating scale from 0 (low) to 100 (high) is used. Table 1 summarizes the results. Raters Restaurant A Restaurant B Rater 1 67 Rater 2 87 Rater 3 83 Rater 4 63 a) Is there a difference among the mean ratings of the restaurants? (35) b) Is there a difference among the scores assigned by the raters? (35) c) Write how the data input for this RBD problem is made in MINITAB software. (30) 78 82 Restaurant C 92 58 Restaurant D 92 68 6 32 8 11 66 76
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a Yes there is a difference among the mean ratings of the restaurants Explanation The mean ratings o... View the full answer
Related Book For
Foundations Of Operations Management
ISBN: 9780133251661
4th Canadian Edition
Authors: Larry P. Ritzman, Lee J. Krajewski, Manoj K. Malhotra, Robert D. Klassen
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