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i dont understand how to compute the beta for question b
Mr. Geller collected information regarding the following stocks and portfolio: Portfolio P1 Security Security B E(T) 5 % 10%
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Answer #1

b]

Beta of a portfolio invested 20% in Security A and 80% in Portfolio P1 is calculated as :

beta = (20% * beta of Security A) + (80% * beta of Portfolio P1)

beta = (20% * 1.25) + (80% * 0.85)

beta = 0.93

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