Question: 26 Which samples show unequal variances? Use α = .05 in all tests. Show the critical values and degrees of freedom clearly and illustrate the decision rule.

a. s1= 5.1, n1= 11, s2= 3.2, n2= 8, two-tailed test

b. s1= 221, n1= 8, s2= 445, n2= 8, left-tailed test

c. s1= 67, n1= 10, s2= 15, n2= 13, right-tailed test