There is a 30 percent probability that a particular stock will earn a 17 percent return and a 70 percent probability that it will earn 11 percent. What is the risk-free rate if the risk premium on the stock is 8.60 percent?
Multiple Choice
4.20 percent
4.80 percent
5.20 percent
5.40 percent
Solution :
Assuming that the return on stock given in the question are market returns we have expected market return as
RM = (17 % * 0.3) + (11 % * 0.7) = 5.1 + 7.7 = 12.8 %
Given that RF = Risk premium on stock = 8.60 % .
Risk premium as per Capital Asset Pricing Model (CAPM) is calculated as follows:
Risk premium = (Return on market - Risk free rate of Interest or return)
= (Market Return - Risk free rate) = ( RM - RF )
Thus Risk premium = 5.60 = ( 12.8 - RF )
5.60 = ( 12.8 - RF )
RF = 12.8 - 5.60 = 4.2 %
Thus risk free rate = 4. 2 %
Hence, the solution is option 1 = 4.2 % = Risk free rate.
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