For the samples summarized below, test the hypothesis, at α = 0.05, that the two variances are different.
Sample 1 Sample 2
Sample Std. Deviaiton 4.3 2.8
Sample size 10 20
a) Reject the hypothesis because the test value 2.36 is less than the critical value 2.88.
b) Reject the hypothesis because the test value 2.36 is less than the critical value 2.35.
c) Accept the hypothesis because the test value 5.56 is greater than the critical value 2.77.
d) Reject the hypothesis because the test value 5.56 is greater than the critical value 2.42.