Stats 200 Common final exam Question 3

Aug 7th, 2016
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3. Choose the best answer. Justify for full credit. (a) A study of 10 different weight loss programs involved 500 subjects. Each of the 10 programs had 50 subjects in it. The subjects were followed for 12 months. Weight change for each subject was recorded. You want to test the claim that the mean weight loss is the same for the 10 programs. What statistical approach should be used? (i) t-test (ii) linear regression (iii) ANOVA (iv) confidence interval (b) A STAT 200 instructor teaches two classes. She wants to test if the variances of the score distribution for the two classes are different. What type of hypothesis test should she use? (i) t-test for two independent samples (ii) t-test for matched samples (iii) z-test for two samples (iv) F- test

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3. Choose the best answer. Justify for full credit.(a) A study of 10 different weight loss programs involved 500 subjects. Each of the 10programs had 50 subjects in it. The subjects were followed for 12 months. Weight change foreach subject was recorded. You want to test the claim that the mean w

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