.A psychology professor believes that teaching students the active recall method influences students' grades at the end...
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.A psychology professor believes that teaching students the active recall method influences students' grades at the end of the course. He takes a sample of 20 students and teaches them this method and how to apply it. The average score for this sample is M = 568. The population of students typically has a normal distribution with 400 and = 100.
a) Can the professor conclude that the students who apply this method obtain results significantly higher than those of the population? Use a one-sided test with .01.
b) Calculate Cohen's d to estimate the effect size.
c) write a sentence demonstrating how the results of hypothesis testing and effect size measurement would appear in a research report.
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