A researcher conducts a repeated-measures study to evaluate a treatment with a sample of n = 16 participants and obtains a t statistic of t = 1.94.  The treatment is expected to increase scores and the sample mean shows an increase. Which of the following is the correct decision for a hypothesis test using a = .05.

A sample has a mean of M = 40.  If 10 points are added to one of the scores, what is the new value for the sample mean?

An analysis of variances produces dftotal = 29 and dfwithin = 27.  For this analysis, how many treatment conditions are being compared?

Two samples, each with n = 6 subjects, produce a pooled variance of 20.  Based on this information, what is the estimated standard error for the sample mean difference?

Which of the following is not an appropriate variable for Pearson’s correlation?

The following table shows the results of a repeated-measures ANOVA.  Based on this table, what is the value for η2, the percentage of variance accounted for by the treatments?Source             SS      df      MS      Between        22        2      11      F = 5.50Within             58      21           Bet. Sub.       0        7     Error            28      14       2Total                  80      23

An analysis of variance produces SSbetween = 30, SSwithin = 60, and an F-ratio with df = 2, 15.  For this analysis, what is the F-ratio?

How do you compute df for the chi-square test for goodness of fit?

A sample has a mean of M = 40.  If 10 points are added to one of the scores, what is the new value for the sample mean?

A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast.  For this study, what is the independent variable?