The folded Ftest for equality of variances a is rarely used

The folded F-test for equality of variances:

a is rarely used because of its complexity.

b requires looking up the critical value for /2.

c puts the smaller variance in the numerator.

d requires looking up two critical values of F instead of one.

Solution

[ANSWER] requires looking up the critical value for /2.

The Folded F test for equality of variances indicated that the
variances for the proxy and sample members in these two years could not be assumed to be equual & it requires the crtical value to be check in /2