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17. 18. The major advantage of using the experimental method is that: a. b. C. d. it allows assessment of causality between the IV

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17. 18. The major advantage of using the experimental method is that: a. b. C. d. it allows assessment of causality between the IV and DV it allows the study of naturally occurring differences among participants participants are a random sample from the population you can test extreme levels of the IV Assume there is an actual positive relationship between exercise and psychological well- being in the population. A researcher conducts a study that fails to find a statistically significant relationship between those two variables; what kind of error did this researcher make? a. b. d. Type I Type II Attribution Error Sampling Error 19. A correlation coefficient is a(n) and mathematically ranges between a. b. C. d. effect size; 0 and 1 p-value; -1 and +1 p-value; 0 and 1 effect size; -1 and +1 eception

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