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?

A set of n = 10 pairs of scores has ΣX = 20, ΣY = 30, and ΣXY = 74.  What is the value of SP for these data?

A researcher uses a repeated-measures ANOVA to test for mean differences among three treatment conditions using a sample of 10 participants.  What are the df values for the F-ratio from this analysis?

What is the primary reason someone would use a t-statistic instead of a z-test for a hypothesis test?

What is the critical value for a correlation with n=22, two-tailed, and an alpha level of 0.10?

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 )