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What is the main advantage of repeated measures ANOVA?

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

The sample consists of n = 6 scores. The mean of the scores is M = 20. When a new score is added to the sample, the new mean is M = 21.  What was the new score that was added?

If z obtained does not exceed the z critical, what decision do you make?

What is the difference between a positively and negatively skewed graph?

Under what circumstances is a score that is 15 points above the mean an extreme score relatively far from the mean?

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 interaction?     B1 B2 A1 2 12 A2 16 ?

An 80% confidence interval for the population mean ranges from 14 to 22. Based on this information:

A researcher selects a sample of n = 17 individuals from a population with a mean of μ = 75 and administers a treatment to the sample. If the research predicts that the treatment will decrease scores, then what is the correct statement of the null hypothesis for a directional (one-tailed) test?

For a set of scores, the mean is 8, and the standard deviation is 4. What is the z-score for the score 7?