22. Got Milk? A dairy in the market for a new container-

filling machine is considering two models, manufactured by companies A and B. Other factors being the same for the two models, the deciding factor is the variability of fills. The model that produces fills with the smaller variance is preferred. In testing for the equality of population variances, which type of rejection region would be most favored by each of these individuals?

a. The manager of the dairy—Why?

b. A sales representative for company A—Why?

c. A sales representative for company B—Why?