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A population distribution has s = 6.  What position in this distribution is identified by a z-score of z = +2.00?

For an independent-measures research study, the data show a 10-point difference between the two treatment means and a pooled variance of 4. Given this information, the value of Cohen’s d is:

A sample of n = 6 scores has a mean of M = 5.  One person with a score of X = 12 is added to the distribution.  What is the mean for the new set of scores?

A researcher is using a repeated-measures design to test for mean differences among four treatment conditions.  If the data for this study consist of 10 scores in each treatment, then how many subjects participated in the study?

A normal distribution has a mean of µ = 80 with s = 20. What score separates the highest 40% of the distribution from the rest of the scores?

For an ANOVA, what is the expected value for the F-ratio when the null hypothesis is true?

Two samples, each with n = 9 scores, produce an independent-measures t statistic of  t = 2.00.  If the effect size is measured using r2, what is the value of  r2?

What is the critical value for a regression analysis with n=45, 1 predictor variable, and an alpha level of 0.01?

Which is NOT an assumption for independent measures t-formula?

Which of the following is a basic difference between the t statistic and a z-score?