Consider the following data from the two independant groups:

Liberals: 2,1,3,2,

Conservaties: 4,3,3,5,2,4,

a. Calculate s for group 1 and for group 2

b. Calculate df x , dfy , and df total

c. Determine the critical values for t, assuming a two tailed test with a p level of 0.05

d. Calculate pooled variance , spooled

e.Calculate the variance version of standard deviation for each group.

f. Calculate the variance and the standard deviation of the distribution of differnces between means.

g. calculate the t stattistic

h. calculate the 95% confidence interval.

i. calculate Cohen's d

(No, pdf's )