November 24, 2021 at 8:20 PM Suppose you compared 2 treatments and used identical twins as the participants. One member of each set of twins received on treatment and the other twin received the other treatment. Below are the data. What was the observed (calculated) value of t? (see pgs 243-245) SAVE ALL YOUR WORK Treatment 1 Treatment 2 D 6 D2 3 4 2 7 4 8 4 6 2 In question 18, there are. _ degrees of freedom? Question 20 In question 18, using the .05 level of significance and a two-tailed t-test, the critical value of t was Question 21 In question 18, using the .05 level of significance and a two-tailed t-test, you should have_ the null hypothesis. Question 22 I In question 18, using the .05 level of significance and a two-tailed t-test, the difference between the means was statistically