The following practice problem has been generated for you:
Asset 1 makes up 30% of a portfolio and has an expected return (mean) of 18% and volatility (standard deviation) of 12%.
Asset 2 makes up 70% of a portfolio has an expected return (mean) of 22% and volatility (standard deviation) of 5%.
With a covariance of 15%, calculate the expected return, variance, and standard deviation of the portfolio