A commercial bank decides to expand its service menu to include the underwriting of new security offerings (i.e., investment banking) as well as offering traditional lending and deposit services. It discovers that the expected return and risk associated with these two sets of service offerings are as follows: Expected returntraditional services 3.50% Expected returnsecurity underwriting 10.75% Standard deviationtraditional services 2.50% Standard deviationsecurity underwriting 8.25% Correlation of returns between two services +0.25 Proportion of revenuetraditional services 70.00% Proportion of revenuesecurity underwriting 30.00% Please calculate the effects of the new service on the banking companys overall return and risk as captured by the banks standard deviation of returns.