Calculating Sharpe Ratio for Performance Appraisal

In the context of performance appraisal in portfolio management, the Sharpe Ratio is a widely used measure for evaluating the risk-adjusted return of an investment. It considers both the excess return of the investment relative to the risk-free rate and the level of risk inherent in the investment, measured as the standard deviation of the investment returns.

Suppose an investment portfolio has an expected return of 12%, a standard deviation of 8%, and the risk-free rate is 2%. What is the Sharpe Ratio for this investment portfolio?