What null hypothesis did you test in Exercise 18.10?
Answer to relevant QuestionsIn the study discussed in Exercise 18.10, the authors also ran a control group under the same conditions, but without the BST intervention. Those data (for males) follow. (a) Calculate the means for these data and plot them ...Using the data from Week 2 and Week 3 of Exercise 18.1, run a matched-sample t test to test the hypothesis that migraines decreased from before to after relaxation therapy. Howell and Huessy (1985) used a rating scale to classify children as to whether or not they showed Attention Deficit Disorder (ADD)–like behavior in the second grade. They then classified these same children again in the ...Let’s see how students and faculty compare on a basic statistical question. Zuckerman, Hodgins, Zuckerman, and Rosenthal (1993) surveyed 550 people and asked a number of questions on statistical issues. In one question a ...In an old study by Clark and Clark (1939), black children were shown black dolls and white dolls and were asked to select one to play with. Out of 252 children, 169 chose the white doll and 83 chose the black doll. What can ...
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