A consumer advocate wants to find out if motivational

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Reference no: EM13634237

A consumer advocate wants to find out if motivational speakers can actually improve people's earning power. He randomly selects a group of 25 people in his city and invites them to participate in a motivational course. He pays for the course if the participants all agree to share their income tax figures for the year before and the year after they take the course. He also pays the subjects a fee for participating in the study. The data summarized below is the results in terms of annual income before and after the course. Use a t-test for correlated groups to determine whether or not the motivational speaker has had an effect. What can you conclude if you use the appropriate 1 tail test and an alpha level of 0.01?

1	35000	34887
2	36284	36160
3	37438	37305
4	37769	37684
5	38449	38428
6	39755	39703
7	41353	41245
8	41541	41422
9	42539	42395
10	42625	42495
11	42672	42567
12	43607	43568
13	43841	43748
14	44430	44420
15	44487	44449
16	44513	44504
17	44699	44560
18	45111	45219
19	45507	45609
20	45625	45638
21	41257	41245
22	41545	41422
23	42519	42395
24	42625	42495
25	42672	42567

Reference no: EM13634237

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