You have estimated the single index model (SIM) for Fund B and found that its alpha and beta are 4% and 1.2 respectively. The standard deviation of Fund B's excess returns is 30% and the market portfolio excess returns have a standard deviation of 20%. What's the idiosyncratic (unsystematic) volatility of Fund B's excess returns? Select one: O A. None of the choices are within 0.01 of the correct answer. OB. 0.18 OC. 0.21 OD. 0.155 OE. 0.23

Essentials Of Investments
11th Edition
ISBN:9781260013924
Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
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Chapter1: Investments: Background And Issues
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You have estimated the single index model (SIM) for Fund B and found that its alpha
and beta are 4% and 1.2 respectively. The standard deviation of Fund B's excess
returns is 30% and the market portfolio excess returns have a standard deviation of
20%. What's the idiosyncratic (unsystematic) volatility of Fund B's excess returns?
Select one:
O A. None of the choices are within 0.01 of the correct answer.
OB. 0.18
OC. 0.21
OD. 0.155
OE. 0.23
Transcribed Image Text:You have estimated the single index model (SIM) for Fund B and found that its alpha and beta are 4% and 1.2 respectively. The standard deviation of Fund B's excess returns is 30% and the market portfolio excess returns have a standard deviation of 20%. What's the idiosyncratic (unsystematic) volatility of Fund B's excess returns? Select one: O A. None of the choices are within 0.01 of the correct answer. OB. 0.18 OC. 0.21 OD. 0.155 OE. 0.23
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