Note: Although you will use MS Excel to analyze the data & will only have to int

Question

Note: Although you will use MS Excel to analyze the data & will only have to interpret the Excel results for the hypothesis test of two population variances, it is always useful to have a "back-up" way to check your work to make sure you have used the data analysis tool correctly. You can always double check the critical value reported by MS Excel by looking up the critical value on the F-probability tables. If the critical value reported by Excel does not match what you look up on the table, at least one of them is incorrect. That means you should make sure you have used the data analysis tool correctly.

The attachment shows the actual problem. There should be FOUR answers in total, one each for letters A - D.

Round each answer to FOUR decimal places for answers A - D

A. The rejection region is F > ­­_____

B. The rejection region is F > ­­_____

C. The rejection region is F > ­­_____

D. The rejection region is F > ­­_____

For each of the cases that follow identify the rejection region that should be used to test H00:-^ against H : ^ Assume that v1 =9, v2-30 a. = 0.20 b. = 0.10 c. = 0.05 d. = 0.02

Explanation / Answer

As this is a two tailed test, then we divide alpha by 2 and set that as the right tailed area for our critical F.

Hence, as df1 = 9, df2 = 30,

a) F(0.10) = 1.848958391
b) F(0.05) = 2.210696983
c) F(0.025) = 2.574610134
d) F(0.01) = 3.066515908 [ANSWERS]

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