A psychologist would like to determine whether there is a relation between depression and aging. It
Question: A random sample obtained from a population with a mean of µ=100. And a treatment is administered to the sample. After treatment, the sample mean is found to be M=104 and the sample variance is s2 =400.
a. Assuming the sample contained n=16 individuals, measure the size of the treatment effect by computing the estimated d and r2.
b. Assuming the sample contained n=25 individuals, measure the size of the treatment effect by computing the estimated d and r2.
c. Comparing your answers from parts a and b, how does sample size influence measures of effect size?
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[Solution] In a study examining the permanence of academic learning, Bahrick and Hall (1991) tested knowledge o #9647
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(Solved) a) How does correlation analysis differ from regression analysis? (b) What does a correlation coeffi #8263
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[Solution] Let’s consider the same dataset from Unit 1, which represent waiting time at the hospital (in minute #19871
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[Solved] The following summary table presents the results from an ANOVA comparing three treatment conditions #21456
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