Author: Anonymous

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

What is NOT true about standard deviations?

A set of n = 5 pairs of X and Y values has SSX = 16, SSY = 4 and SP = 2.  For these data, the Pearson correlation is ____.

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 ?

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?