23. Cons ider th e fo l lowing c om p e t in g h y p o th e s e s and relevant summa r y statistics:

H0: σ21/ σ22 = 1 HA: σ21/ σ22 ≠ 1

As sume th a t th e tw o p o p u la t io n s are normal ly distributed.

a. Using th e p -value approach, c o n d u c t this hyp o th e s i s te s t at th e 5% s igni f icance level.

b. Confirm your c on c lu s ion s by us ing th e critical value approach.

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Sample 1:48.5, s = 18.7, and n = 10 Sample 2:x=50.2, s = 12.9, and n = 8