Which of the following statements regarding the F-distribution are true:
(a) F-distribution has 2 sets of degrees of freedom
(b) F-distribution has 1 set of degree of freedom
(c) F-distribution is used to test the null-hypothesis that the population variances are equal
(d) F-distribution is an all positive distribution
(e) F-distribution is both positive and negative distribution
Select the most appropriate option:
1
(a), (c), (e)
2
(a), (c), (d)
3
(b), (c), (d)
4
(b), (c), (e)