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This is another hypothesis test question.

7.4-9. This is another hypothesis test question.
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Statistics and Probability-8089480.doc

Solution:
Null Hypothesis (Ho): σx²/σy² = 1
Alternative Hypothesis (Ha): σx²/σy² > 1
Test Statistics
F = s1²/s2² if s1² > s2² = (12.9)²/ (7.1)² = 3.30
Degrees of freedom, df1 =...

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