The results from a repeated-measures ANOVA are reported as, F(3, 24) = 3.75, p < .05.  For this study, how many treatment conditions were compared?

The values in the following matrix are treatment means from a two-factor study. One of the means is missing. What value for the missing mean would most likely result in no main effect for factor B?     B1 B2 A1 8 10 A2 14 ?

A person gets a score of 80 for a test measuring anxiety levels. The mean score is 64 with a standard deviation of 8. What is this person’s z-score?

An advertising company would like to know which of two popular TV shows puts people in the best mood. Participants are randomly assigned to watch one of two TV shows and then completed a questionnaire that assesses mood. The TV shows and mood scores are The Office (M = 16) and Family Guy (M = 24). Higher scores indicate better moods. The ANOVA results are F(1, 149) = 3.42, p < .01. Based on these results, which conclusion is true?

A researcher plans to conduct a research study comparing two treatment conditions with a total of 20 scores in each treatment.  Which of the following designs would require only 20 participants?

As standard deviation decreases what happens to standard error (SE)

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

How many participants did I use in my study if I conducted a repeated measures t test and included t(50) in my interpretation?

A professor is using a new teaching method that is supposed to decrease his students’ exam scores. A one-tailed t-test was used. The critical value is 2.75 and the obtained value is 2.23. Which of the following is correct?

When can a z-test be used?