Question 7
0.5 pts
State the critical value for a two-independent-sample t test given the following conditions:
1. Two-tailed test, $\alpha$ = .01, total df = 26
2. One-tailed test, lower-tail critical, $\alpha$ = .01, df = 15 for each group
3. Two-tailed test, $\alpha$ = .05, n = 12 in each group
4. One-tailed test, upper-tail critical, $\alpha$ = .05, n for both groups combined is 30
(Privitera, 2019, p. 275, #15)