What are the degrees of freedom associated with t in the following situation: The researcher is conducting a dependent samples t-test between test scores of 15 pairs of siblings, MD=3, SD=1.5. a.df=3       b.df=14   c. df=28   e.

How would you find (a.) and (b.)?? As well as finding the test statistic and p-value?

The following table shows the results of an analysis of variance comparing three treatment conditions. What is the value of h2, the percentage of variance accounted for? Source         SS      df      MS Between      30        2      15      F = 7.50 Within         60      30        2 Total            90      32

Let x be the average number of employees in a group health insurance plan, and let y be theaverage administrative cost as a percentage of claims. The following data is based on a randomsample:x 5 7 15 25 35y 40 35 30 20 25a. Plot a scatter diagram of the above data.b. Estimate the sample correlation coefficient r as positive, zero, or negative.c. Interpret your results from parts a. and b.

Two samples of n = 5 participants each generate the following data.  Calculate a t-test score for the difference of these two groups. Group 1 Group 2 2 3 3 3 2 2 2 2 1 2     t(8) = 2.86     t(8) = 2.29     t(8) = 2.5     t(8) = 1.11 Based on the results from the previous question (#7), what is the tcrit and are Group 1 and Group 2 significantly different from each other? Use α = .05, two-tailed test.     tcrit = 1.860 Yes, the two groups are significantly different from each other.     tcrit = 2.306 Yes, the two groups are significantly different from each other.     tcrit = 2.228 Yes, the two groups are significantly different from each other.     tcrit = 3.355 No, the two groups are not significantly different from each other.

Two samples of n = 5 participants each generate the following data.  Calculate a t-test score for the difference of these two groups. Group 1 Group 2 2 3 3 3 2 2 2 2 1 2     t(8) = 2.86     t(8) = 2.29     t(8) = 2.5     t(8) = 1.11

In testing for the differences between the means of two independent populations where the variances in each population are unknown but assumed equal, the degrees of freedom are Seleccione una: OA. n- 1. O B. m + n2 - 1. OC. n- 2. OD. m + n2 - 2.