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Which combination of factors is most likely to produce a significant value for an independent-measures t statistic?

One sample has a variance of s2 = 10 and a second sample has a variance of s2 = 6.  If the two samples have the same number of scores, what is the pooled variance for the two samples?

A sample has M = 72 and s = 4.  In this sample, what is the X value corresponding to z = –2.00?

One sample has a variance of s2 = 10 and a second sample has a variance of s2 = 6.  If the two samples have the same number of scores, what is the pooled variance for the two samples?

In analysis of variance, what is a factor?

An independent-measures study comparing two treatment conditions produces a t statistic with df = 18.  If the two samples are the same size (n1 = n2), how many participants were in each of the samples?

A two-factor research study has two levels of factor A and three levels of factor B with 8 participants in each treatment condition.  For this study, what is the value for dfbetween treatments?

Using letter grades (A, B, C, D, and F) to classify student performance on an exam is an example of measurement on a(n) ____ scale of measurement.

What is the critical value for a regression analysis with n=20, 1 predictor variable, and an alpha level of 0.01?

For a research study, comparing attitude scores for males and females, participant gender is an example of what kind of variable?