In Exercise 15.3 what sample sizes would be needed to raise power to 0.70, 0.80, and 0.90?
Answer to relevant QuestionsFollowing on from Exercise 15.3, suppose that my colleagues were tired of having children tell them what they think we want to hear and gave them a heart-to-heart talk on the necessity of accurate reporting. Suppose that ...Use protected t tests for the data in Exercise 16.7 to clarify the meaning of the significant F. In Exercise 16.7 Use the Bonferroni test for the data in Exercise 16.2 to compare the Younger/Low with the Older/Low group, and the Younger/High with the Older/High group. Langlois and Roggman (1990) took facial photographs of males and females. They then created five groups of composite photographs by computer-averaging the individual faces. For one group the computer averaged 32 randomly ...What would happen if the sample sizes in Exercise 16.7 were twice as large as they were?
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