Question 1083478: PS. TO BE ANSWERED USING STATA.
An experiment in teaching introductory biology was recently conducted at a large university. One section was taught by the traditional lecture-lab method, a second was taught by an all-lab/demonstration approach with no lectures, and a third was taught entirely by a series of recorded lectures and demonstrations that the students were free to view at any time and as often as they wanted. Students were randomly assigned to each of the three sections, and at the end of the semester, random samples of final exam scores were collected from each section.
*Lecture/Lab - 55, 57, 60, 63, 72, 73, 79, 85, 92
*All Lab/demo - 56, 60, 62, 67, 70, 71, 82, 88, 95
*Recorded - 50, 52, 60, 61, 63, 69, 71, 80, 82
a) Test if the final exam scores of the students in the three sections are normally distributed.
b) Test if variation in final exam scores is equal among the three sections.
c) Test if the mean final exam scores vary among three sections.
d) Which teaching method would you recommend? Justify the answer.
Answer by ikleyn(52798)   (Show Source):
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