Independent random samples were selected from each of two normally distributed populations, n1 = 6 from population
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Independent random samples were selected from each of two normally distributed populations, n1 = 6 from population 1 and n2 = 4 from population 2. The data are shown in the following table.
Sample 1 Sample 2 LO3 3.1 2.3 4.3 1.4 1.2 3.7 1.7 8.9
.6 3.4
a. Test H0: s1 2
= s2 2 against Ha: s1 2 6 s2 2 . Use a = .01.
b. Test H0: s1 2
= s2 2 against Ha: s1 2 s2 2 . Use a = .10.
c. Test H0: s1 2
= s2 2 against Ha: s1 2 7 s2 2 . Use a = .05.
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