8. You would like to test th e claim th a t th e variance o f a normally distribu te d p opulation is more than 2 squared units. You draw a random sample o f 10 observations as 2 , 4, 1 , 3 , 2 , 5 , 2 , 6 , 1 , 4. At α = 0.10, test the above claim using

(a) th e p -value approach and

(b) th e critical value approach.