Find the test statistic value and degrees of freedom for two sample variance
In comparing the two variances below, what is the test value and what are the degrees of freedom that must be used?

Variance

Number of values

Sample 1

6

18

Sample 2

11

29

a.test value = 1.83, degrees of freedom = 18 and 29
b.test value = 1.83, degrees of freedom = 17 and 28
c.test value = 0.55, degrees of freedom = 18 and 29
d.test value = 0.55, degrees of freedom = 17 and 28