Author: Anonymous

If a researcher is using a one sample t statistic to test a null hypothesis about a population, what information is needed from the population to calculate the one sample t statistic?

For a population with µ = 80 and s = 10, what is the X value corresponding to z = –0.50?

What is measured by the numerator of the z-score test statistic?

An independent-measures study with n = 6 in each sample, produces a sample mean difference of 4 points and a pooled variance of 12.  What is the value for the t statistic?

For any distribution, what is the z-score corresponding to the median?

One sample of n = 8 scores has a variance of s2 = 6 and a second sample of n = 8 scores has s2 = 10.  If the pooled variance is computed for these two samples, then the value obtained ____.

A chi-square test for independence has df = 3.  What is the total number of categories (cells in the matrix) that were used to classify individuals in the sample?

What frequency distribution graph is appropriate for scores measured on a nominal scale?

For the following frequency distribution of exam scores, how many students had scores lower than X = 80?X               f 90-94    385-89    480-84    575-79    270-74    1

A set of n = 30 pairs of scores (X and Yvalues) produces a regression equation of Ŷ = 11X + 13. Find the predicted Y value for an X score of 10.