Homework Clinic
Mathematics Clinic => Statistics => Topic started by: darbym82 on Feb 14, 2020
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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:
Calculate the test statistic 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.
◦ T+ = 26
◦ T- = 19
◦ T+ = 78
◦ T+ = 59
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T- = 19