Author: Anonymous

Which of the following is expected if the null hypothesis is true for an analysis of variance?

A set of n = 60 pairs of scores (X and Yvalues) produces a regression equation of Ŷ = 7X + 16. Find the predicted Y value for an X score of -2.

A hypothesis test with a sample of n = 25 participants produces a one sample t-test statistic of t = +2.53.  Assuming a one-tailed test with the critical region in the right-hand tail, what is the correct decision?

A population has a mean of µ = 30.  If 3 points are added to each score, what is the mean for the new distribution?

If other factors are held constant, what is the effect of increasing the sample variance?

In N = 25 games last season, the college basketball team averaged µ = 76 points with a standard deviation of s = 6.  In their final game of the season, the team scored 89 points.  Compared to the last season average points, the number of points scored in the final game was ____.

An independent-measures study produces sample means of M1 = 35 and M2 = 31 and a pooled variance of 25.  For this study, Cohen’s d = ____.

For a perfectly symmetrical distribution with µ = 30, what is the most probable value for the mode?

A research report concludes that there are significant differences among treatments, with “F(2, 27) = 8.62, p < .01.”  If the same number of participants was used in all of the treatment conditions, then how many individuals were in each treatment?

The sum of the squared deviation scores is SS = 20 for a sample of n = 5 scores.  What is the variance for this sample?