Chapter 13, Problem 69H

Are the means for the final exams the same for all statistics class delivery types? Table 13.25 shows the scores on final

exams from several randomly selected classes that used the different delivery types.

Online	Hybrid	Face-to-Face
72	83	80
84	73	78
77	84	84
80	81	81
81		86
		79
		82

Table 13.25

Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data

were collected independently and randomly. Use a level of significance of 0.05.