Which is NOT an alternate hypothesis used when calculating a factorial/two-factor ANOVA?

For a population with µ = 80 and s = 6, what is the z-score corresponding to X = 68?

When comparing more than two treatment means, why should you use an analysis of variance instead of using several t tests?

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 set of 56 students who returned surveys is an example of a ____.

In general, what characteristics of the difference scores are most likely to produce a significant t statistic for the repeated-measures hypothesis test?

A repeated-measures ANOVA study produces an F-ratio with df = (2, 20). How many subjects participated in this study?

Calculate the range for the scores in Group B Group A: 20, 100, 79, 88, 35, 91, 43, 12, 256Group B: 232, 78, 62, 33, 90, 21, 15, 67, 23

A sample is selected from a population with µ = 46 and a treatment is administered to the sample.  After treatment, the sample mean is M = 48 with a sample variance of s2 = 16.  Based on this information, the size of the treatment effect, as measured by Cohen’s d, is ____.

A researcher reports an independent-measures t statistic with df = 30.  If the two samples are the same size (n1 = n2), then how many individuals are in each sample?

In a sample of n = 6 scores, the smallest score is X = 3, the largest score is X = 10, and the mean is M = 6.  If the largest score is changed from X = 10 to X = 22, then what is the value of the new mean?