Solved: Two methods for teaching reading were applied to

Chapter 10, Problem 69E

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Two methods for teaching reading were applied to two randomly selected groups of elementary schoolchildren and then compared on the basis of a reading comprehension test given at the end of the learning period. The sample means and variances computed from the test scores are shown in the accompanying table.

Method I

Method II

Number of children in group

11

14

\(\bar{y}\)

64

69

\(s^{2}\)

52

71

Do the data present sufficient evidence to indicate a difference in the mean scores for the populations associated with the two teaching methods?

a What can be said about the attained significance level, using the appropriate table in the appendix?

b Applet Exercise What can be said about the attained significance level, using the appropriate

applet?

c What assumptions are required?

d What would you conclude at the \(\alpha\) = .05 level of significance?

Equation Transcription:

Text Transcription:

bar{y}

s^2

alpha

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