Author: Anonymous

Calculate standard deviation for the following sample of exam scores: 6, 7, 4, 5, 8, 9.

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?

ANOVA is necessary to evaluate mean differences among three or more treatments, in order to:

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

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?

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?

What is the critical value for a repeated measures ANOVA with n=32, 5 levels for factor A, , dfWG = 60, and an alpha level of 0.01?

A 95% confidence interval for the population mean ranges from 24 to 32. Based on this information:

An ANOVA produces SSbetween groups = 40 and MSbetween groups = 10. In this analysis, how many treatment conditions are being compared?