Page 46 - FINAL CFA SLIDES DECEMBER 2018 DAY 4
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Session Unit 3:
12. Hypothesis Testing
Hypothesis decision: 10.2596 > 2.024
A statistically significant difference between mean firm
betas before and after deregulation.
Reject Ho!
Business decision:
Support the hypothesis/proposition that deregulation
resulted in decreased risk. Any limitation?
2 Key Rules:
• 2 samples independent? Then test of the differences in means
• 2 samples dependent? Then Paired Comparisons Test!
