If the sample size is held constant, which of the following will produce the widest 90% confidence interval for the population mean difference for a repeated-measures study?

A sample of n = 25 scores has a mean of M = 40 and a variance of s2 = 100.  What is the estimated standard error for the sample mean?

Although a research study is typically conducted with a relatively small group of participants known as a ____, most researchers hope to generalize their results to a much larger group known as a ____.

An English teacher is looking at the scores of her students’ latest essay: 4, 8, 6, 9, 5. Calculate the value of Sigma(X*10) for the data.

A sample of n = 25 scores has a mean of M = 40 and a variance of s2 = 100.  What is the estimated standard error for the sample mean?

If the sample size is held constant, which of the following will produce the widest 90% confidence interval for the population mean difference for a repeated-measures study?

A sample of difference scores has a mean of 5 with a variance of 100.  If effect size is measured using Cohen’s d, what is the value of d?

What is measured by the denominator of the z-score test statistic?

Which combination of factors is most likely to produce a small value for the F-ratio?

An independent-measures research study compares three treatment conditions using a sample of 5 in each treatment.  For this study, the three samples have SS1 = 10, SS2 = 20, and SS3 = 15.  What value would be obtained for MSwithin?