Diagram the situation described in Exercise 15.6 along the lines of Figure 15.2.
Answer to relevant QuestionsHow many subjects would we need in Exercise 15.6 to have power 5 .80? The data in Exercises 16.7 and 16.9 both produced a significant F. Do you have more or less faith in one of these effects? Why? Calculate d^ for the comparison of WL with SIT in Exercise 16.18 using the standard deviation of the Control group to standardize the difference. Use MYSTAT or LazStats to reproduce the analysis in Exercise 16.23. The data follow. Use simple effect procedures to compare low-birth-weight and normal-birth-weight conditions for multiparous mothers. (Do this by recalculating the error term rather than using MSerror from the complete experiment.)
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