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On average, what value is expected for the t statistic when the null hypothesis is true?

Assume that any mean difference is significant. Describe the effects for the table below:   B1 B2 A1 18 22 A2 22 26

For the repeated-measures t statistic, df = ____.

In an independent-measures study with n = 8 in each treatment, the data produces M = 86 for the first treatment and M = 82 for the second treatment, with a pooled variance of 16. What is Cohen’s d for these data?

A population has µ = 50 and s = 5.  If 10 points are added to every score in the population, then what are the new values for the mean and standard deviation?

If a t statistic is computed for a sample of n = 4 scores with SS = 300, then what are the sample variance and the estimated standard error for the sample mean?

A two-factor experiment with 6 levels of factor A and 8 levels of factor B would consist of ____ separate treatment conditions and the dfIInteraction A x B would be ____.

A repeated-measures ANOVA produced an F-ratio of F = 4.00 with df = 1, 14.  If the same data were analyzed with a repeated-measures t test, what would be the df value for the t statistic?

For a population with µ = 80 and s = 10, what is the X value corresponding to z = –0.50?

For a sample taken from a population with mu=38 and little sigma=6, which sample size would likely create the smallest standard error of the mean?