The following information is available for two samples selected from independent normally distributed populations Complete parts (a) and (b) Population A n=21 Population B:n=16 s2 = 18.9 s2 = 50.6 a. At the 0.05 level of significance, is there evidence of a difference between o; and o? Determine the hypotheses. Choose the correct answer below. CA Hoof so} OB Ho of 1 c H o}> 0 Hy oo OC. H D. Ho po Hp: 0}+07 Ho b. Suppose that you want to perform a one-tail test. At the 0.05 level of significance, what is the upper-tail critical value of F to determine whether there is evidence that co? What is your statistical decision? The upper-tail critical value of Fis (Round to two decimal places as needed)