ANSWERS_-_independent_samples_t-test

ANSWERS_-_independent_samples_t-test - confidence between...

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ANSWERS Multiple-Choice 1- b; 2- a; 3- b; 4- c; 5- d; 6- d; 7- d; 8- b; 9- b; 10- c; 11- c; 12- b; 13- b; 14- c; 15- d; 16- b; 17- d; 18- c; 19- a; 20- b Problems and essays #1- t test for independent means; t needed (df = 8, p < .01, 2 –tailed) = +/- 3.3356. TRAINING: N = 5, df = 4, mean = 15.8, SS 1 = 10.8 NO TRAINIG: N = 5, df = 4, mean = 16, SS 2 = 26 S 2 pooled = 4.6 Estimated standard error = 1.36 t = (15.8 – 16) / 1.36 = -0.15 Do NOT reject the null hypothesis. There is no difference in self-
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Unformatted text preview: confidence between the two groups. #2- - t test for independent means; t needed (df = 8, p < .05, 2 –tailed) = +/- 2.31 Men: N = 5, df = 4, mean = 80.8, SS 1 = 204.8 Women: N = 5, df = 4, mean 83.2, SS 2 = 140.8 S 2 pooled = 43.2 Estimated standard error = 4.16 t = (80.8 – 83.2) / 4.16 = -0.58 Do NOT reject the null hypothesis. There is no difference in performance based on gender....
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