Question

4) A statistics professor is studying the learning styles of college students. The professor would like to determine the effect of material delivery method (traditional classroom lecture, on-line, hybrid classroom and on-line, and self study) on comprehension. a) State the Hypothesis to show comprehension depends on delivery method. b) Choose a level of significance Use a = 0.05 for this problem. c) To test the hypothesis, the professor randomly divided his class of 80 students into four groups of 20 students with each group using one of the delivery methods. At the end of the study period, all 80 students took the same 20 question multiple choice test. The data appear in the Test Score worksheet of the HW4 data workbook on Moodle. Test the hypothesis using Excel. d) Draw a conclusion and report that in the context of the problem. e) Assume that delivery method is a random factor, i.e., the four delivery methods represent a random sample of all possible delivery methods. Estimate the components of variance in test score.

data:

Lecture	On-line	Hybrid	Self Study
6	17	17	9
8	15	17	10
14	8	10	8
12	6	12	14
18	11	18	17
17	10	11	8
11	14	9	10
10	13	16	9
15	8	12	11
14	5	13	15
19	15	16	13
8	17	19	12
10	13	14	10
11	11	16	18
11	9	16	12
10	15	11	8
11	16	13	9
15	13	17	11
12	8	17	9
10	9	10	9

Answer 1