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A one-tailed independent-samples t-test was used to examine whether a violent video game decreased aggression compared to a non-violent video game. The critical value was 3.76. The test results are as follows: t(78) = 4.30, p < .05, d = 0.21. Which of the following is true?

What are the values for SS and variance for the following sample of n = 4  scores?  Sample:  1, 1, 0, 4

When n is small (less than 30), how does the shape of the t distribution compare to the normal distribution?

A population with a mean of µ = 6 has ΣX = 42.  How many scores are in the population?

Which of the following is an example of a situation for which a factorial ANOVA would be the most appropriate?

For an independent-measures ANOVA comparing three treatments with a sample of n = 5 in each treatment, what is the critical value for the F-ratio using a = .05?

For the independent-measures t statistic, what is the effect of increasing the difference between sample means?

Which of the following sets of correlations correctly shows the lowest to strongest degree of relationship?

A researcher uses an anonymous survey to investigate the study habits of American college students.  Based on the set of 56 surveys that were completed and returned, the researcher finds that these students spend an average of 4.1 hours each week working on course material outside of class. For this study, the average of 4.1 hours is an example of a ____.

You are instructed to subtract four points from each score, square the resulting value, and find the sum of the squared numbers.  How would this set of instructions be expressed in summation notation?