Question

Do popular diets really help customers in the long-run? Many diets help customers lose weight initially only to have the customer add the weight back on after the first few months on the diet. A commercially successful diet company conducted a study of twelve randomly selected customers and measured their weight after before starting the diet and then again after staying with the diet for a year. The company hoped that the initial weight loss would be sustained after the first year on the diet. The data is shown below: 1 N Customer Initial One Year 185 175 192 193 3 125 115 4 148 146 5 165 170 6 220 175 265 170 8 177 174 9 302 266 10 112 116 11 154 148 12 230 256 7 Find the rejection region for the Wilcoxon Signed Rank Test to test to determine if the distribution of initial weight is shifted to the right of the distribution of one-year weight. Test using a = 0.05. A) T. s 10 B) T. 317 C) T. 314 D) T. 37

Answer 1

at α=0.05

one tail test

rejection region is (option B)

B) T. 317

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