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A sample has a mean of M = 39.5 and a standard deviation of s = 4.3, and produces a t statistic of t = 2.14.  For a two-tailed hypothesis test with a = .05, what is the correct statistical decision for this sample?

A sample of n = 5 scores has a mean of M = 12.  What is ΣX for this sample?

What is the critical value for factor A in a Factorial ANOVA with N=77, 6 levels for factor A and 4 levels for factor B, and an alpha level of 0.05?

What value do you get for ΣX – 1 for the following data set: 1, 3, 5, 6

In a population of scores, X = 83 corresponds to z = –0.50 and X = 93 corresponds to z = +2.00.  What are the values for the population mean and standard deviation?

Assume that any mean difference is significant. Describe the effects for the table below:   B1 B2 A1 16 16 A2 22 20

For an independent-measures research study, the data show an 8-point difference between the two treatment means and a pooled variance of 4.  Given this information, what is the value of Cohen’s d?

Which of the following sets of data would produce the largest value for an independent-measures t statistic?

An independent-measures research study compares three treatment conditions using a sample of n = 5 in each treatment.  For this study, the three sample means are, M1 = 1,  M2 = 2,  and M3 = 3.  For the ANOVA, what value would be obtained for SSbetween?

A population has µ = 50.  What value of s would make X = 55 a central, representative score in the population that is closest to the mean?