4. Using the result you got form question 3, and a level of significance of .05, what ate the two-tailed critical values associated with each result? Would the null hypotheses be rejected? 3. Time for...

4. Using the result you got form question 3, and a level of significance of .05, what ate the two-tailed critical values associated with each result? Would the null hypotheses be rejected?

3. Time for some tedious, by hand practice just to see if you can get the numbers right. Using the following information, calculate  the t-test statistics by hand.

x1=62     x2=60   n1=10   n2=10     s1=2.45   s2=3.16

x1=158       x2=167.4      n1=22           n2=26             s1=2.06        s2=2.59.

x1=200       x2=198         n1=17           n2=17             s1=2.45.        s2=2.35