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What is stated by the null hypothesis for the chi-square test for independence?

A 95% confidence interval for the population mean ranges from 44 to 52. Based on this information:

For an independent-samples t statistic, increasing the number of scores in the sample will _____ r2.

A set of n = 15 pairs of X and Y scores has SSX = 10, SSY = 40, and SP = 30.  What is the slope for the regression equation for predicting Y from X?

In a frequency distribution graph, frequencies are presented on the ____ and the scores (categories) are listed on the ____.

A repeated measures study uses a sample of 25 participants to evaluate the mean differences among 3 treatment conditions. In the analysis of variance for this study, what is the value for dfbetween groups?

For a population with µ = 100 and s = 20, what is the X value corresponding to z = –0.75?

The regression equation is determined by finding the minimum value for which of the following?

Which of the following symbols identifies the sample variance?

For the following distribution, how many people had scores greater than X = 14?X              f20-24   215-19   510-14   45-9         1