Stock X has an 11 percent expected return, a beta coefficient of 0.9 and a 30 percent standard deviation. Stock Y has a 13 percent expected return, a beta coefficient of 1.2 and a 30 percent standard deviation. If the returns on stock X and Y are positively correlated (that is, the correlation coefficient is between 0 and 1), would you expect the standard deviation of a portfolio consisted of equally weighted stock X and Y to be less than 30 percent, equal to 30 percent, or greater than 30%? Why? Explain and be concise.