The yearly portfolio returns for 3 different investment firms over a 10-year period are listed in the
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The yearly portfolio returns for 3 different investment firms over a 10-year period are listed in the accompanying table. Do these data show a statistically significant difference in the firms’ performances? Assume that the population errors meet the conditions necessary for ANOVA. Let a = .01.
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Mean return Standard deviation Number of investments Firm 1 11.5 3.0 20 Firm 2 12.0 2.0 10 Firm 3 10.0 2.4 25
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Related Book For
Statistics For Business And Financial Economics
ISBN: 9781461458975
3rd Edition
Authors: Cheng Few Lee , John C Lee , Alice C Lee
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