Wheat is a staple for many countries around the TEST world and is a crucial part of their agricultural sectors. The file Wheat2 contains yield data for 50 selected hectares from Hungary and Poland in 2018 in tons.

a. At the 0.05 level of significance, is there evidence of a difference in the variability of yield per hectare between Hungary and Poland?

b. Determine the \(p\)-value in (a) and interpret its meaning.

c. What assumption do you have to make about the two populations in order to justify the use of the \(F\) test?

d. Based on (a) and (b), which \(t\) test defined in Section 10.1 should you use to test whether there is a significant difference in the mean yield per hectare in Hungary and Poland?