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What is the relationship between a sample and a population?

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 = 24) and Family Guy (M = 16). Higher scores indicate better moods. The ANOVA results are F(1, 149) = 3.42, p < .01. Based on these results, which conclusion is true?

What is the correct denominator for the repeated-measures F-ratio?

A Factorial ANOVA has 6 levels for factor A and 9 levels for factor B and uses 7 participants in each treatment condition. What is the total number of participants needed for the study?

In a repeated-measures analysis of variance, how does the magnitude of the mean differences from one treatment to another contribute to the F-ratio?

A scatter plot shows data points that are widely scattered around a line that slopes down to the right.  Which of the following values would be closest to the correlation for these data?

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 = 24) and Family Guy (M = 16). Higher scores indicate better moods. The ANOVA results are F(1, 149) = 3.42, p < .01. Based on these results, which conclusion is true?

The scatter plot for a set of X and Y values shows the data points clustered in a nearly perfect circle.  For these data, what is the most likely value for the Pearson correlation?

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 A, factor B, and no interaction?     B1 B2 A1 15 13 A2 13 ?

What does a repeated-measures ANOVA help eliminate?