Two methods for teaching reading were applied to two
Chapter 8, Problem 120SE(choose chapter or problem)
Two methods for teaching reading were applied to two randomly selected groups of elementary schoolchildren and were 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. Find a \(95 \%\) confidence interval for \(\left(\mu_{1}-\mu_{2}\right)\). What assumptions are necessary?
Equation Transcription:
Text Transcription:
95%
(\mu_1- \MU_2)
\bar =64
\bar y=69
s2=52
s2=71
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