A researcher is concerned about not being able to detect true differences. From the following options, how would you advise the researcher regarding her analyses?
a. Change the probability level to p= .001
b. Evaluate and conduct the study with a new sample
c. Reanalyze with a two-tailed analyses
d. Use a non-parametric significance test
b
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Answer the following statement(s) true (T) or false (F)
Pearson’s product–moment correlation coefficient is used when both the variables are measured at the nominal level.
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If you have a population standard deviation of 10 and a sample size of 4, what is your standard error of the mean?
a. ?5 b. 14 c. 6 d. 5
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For ? = .05 and df = 1,25, what is the critical value?
a. 4.08 b. 4.24 c. 3.38 d. 2.92
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