The required rate of return for a security with a beta coefficient of 1. 5 is 14%.
Changing the risk-free return (inflation) changes only the y-intercept of the security market line.
Changing the market risk premium changes only the slope of the security market line.
When the beta of a stock doubles, the required return does not double.
The required return can be determined using the capm.
According to CAPM:
Required return = risk free + (beta x market premium)
5% + 1.5(6) = 14%
Assume the beta of the above stock doubles, requried retrun becomes:
5% + (3 x 6) = 23%
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