As it turns out, a research assistant has just finished running the experiment described in Exercise 15.10 without having carried out any power calculations. He tried to run 20 subjects in each group, but he accidentally tipped over a rack of cages and had to void 5 subjects in the experimental group. What is the power of this experiment?
Answer to relevant QuestionsAssume that I have just conducted a study comparing cognitive development of lowbirthweight (premature) and normal-birthweight babies at one year of age. Using a score of my own devising, I found the sample means of the two ...Generate a table analogous to Table 15.2 for power equal to 0.80, with a = .01, two-tailed. Diagram the situation described in Exercise 15.3 along the lines of Figure 15.2. Calculate d^ for the comparisons you made in Exercise 16.10 and interpret the meaning of each. Another way to look at the Eysenck study mentioned in Exercise 16.1 is to compare four groups of participants. One group consisted of Younger participants who were presented the words to be recalled in a condition that ...
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