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7) R-squared from regressing Apple's stock return on a market index is 0.8. The coefficient on the market index (beta) is 2. Apple's variance is

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7) R-squared from regressing Apple's stock return on a market index is 0.8. The coefficient on the market index (beta) is 2. Apple's variance is 0.2. What is the correlation between Apple and the market index? What percentage of Apple's variance is systematic? (5pts)

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