Question: In Table 6.6.3, data were presented from an experiment that compared two types of surgery. The average pain score of the 49 children given conventional

In Table 6.6.3, data were presented from an experiment that compared two types of surgery. The average pain score of the 49 children given conventional tonsillectomies was 4.3, with an SD of 2.8. For the 52 children in the Coblation group the average was 1.9 with an SD of 1.8. Use these data to construct a 95% confidence interval for the difference in population average pain scores.

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Let 1 denote conventional treatment and let 2 denote Coblation y 143 SE1 28 49 04 y2 19 ... View full answer

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