You w ould like to test the claim th a t the variance o f a norm ally distributed population is m ore than 2 squared units. You draw a random sample o f 10 observations as 2 , 4, 1 , 3 , 2 , 5 , 2 , 6 , 1 , 4. A t α = 0.10, test the above claim using

(a) the p -value approach and

(b) the critical value approach. P-399