When performing the hypothesis test for the ratio of two population variances, the upper critical F value is denoted FR. The lower critical F value, FL , can be found as follows: interchange the degrees of freedom, and then take the reciprocal of the resulting F value found in table A-5. FR can be denoted F?/2 and FL can be denoted F1-?/2.
Find the critical values FL and FR for a two-tailed hypothesis test based on the following values:
n1 = 9, n2 = 7, ? = 0.05
a. 0.2411, 4.1468
b. 0.3931, 4.1468
c. 0.2150, 4.8232
d. 0.2150, 5.5996