A chi-square test for independence has df = 2.  What is the total number of categories (cells in the matrix) that were used to classify individuals in the sample?

A set of n = 35 pairs of scores (X and Yvalues) produces a regression equation of Ŷ = 12X + 14. Find the predicted Y value for an X score of 2.

A population of scores has µ = 50 and s = 5.  If every score in the population is multiplied by 3, then what are the new values for the mean and standard deviation?

A sample of 30 people is selected from a population with an unknown mean. The one-sample t estimation equation is used to compute the 99% confidence interval around µ. Which of the values below should be used for t in this equation?  µ = 40 ± ( t )( 4 )

For a sample with M = 80, a score of X = 88 corresponds to z = 2.00.  What is the sample standard deviation?

In a population with s = 8, a score of X = 44 corresponds to a z-score of z = –0.50.  What is the population mean?

If the sample mean difference is 3 points, which of the following sets of data would produce the largest value for Cohen’s d?

What technique uses an independent variable to explain the variability of the dependent variable?

You have a score of X = 65 on an exam.  Which set of parameters would give you the best grade on the exam?

A hypothesis test produces a one sample t-test statistic of t = 2.20.  If the researcher is using a two-tailed test with alpha = .05, how large does the sample have to be in order to reject the null hypothesis?