Following up the study referred to in Exercise 19.5, Hraba and Grant (1970) repeated the Clark and Clark study. The studies were not exactly equivalent, but they were close enough and the results are interesting. They found that out of 89 black children, 28 chose the white doll and 61 chose the black doll. Run the appropriate chi-square test on their data and interpret the results.
Answer to relevant QuestionsCombine the data from Exercises 19.5 and 19.6 into a two-way contingency table and run the appropriate test. How does the question that the two-way classification addresses differ from the questions addressed by Exercises ...What is the difference between the null hypothesis tested by Wilcoxon’s matched-pairs signed-ranks test and the corresponding t test? Compute a reasonable effect size measure for the data in Exercise 20.2. There are probably several different measures that you could come up with, so you should chose one that will give your reader a real sense of the role ...The results in Exercise 20.7 are not quite as clear-cut as we might like. Plot the differences as a function of the first-born’s score. What does this s suggest? Apply a meta-analysis to these data and draw the appropriate conclusions.
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