Using the following information, please calculate the return of an international portfolio. Assume that a portfolio is 45% invested in U. S. stock and 55% in Chinese stock (a = 0.45). Annualized expected returns are 5% and 12% for the US and China stocks, respectively. σUSA = 18.5%; σCHINA = 22.3%; rUSA, CHINA= 0.35 (Correlation)

Required: 1-a. the marketing manager argues that a $5,000 increase in the monthly advertising budget would increase monthly sales by $9,000. calculate the increase or decrease in net operating income. 1-b. should the advertising budget be increased ? yes no hintsreferencesebook & resources hint #1 check my work 8.value: 1.00 pointsrequired information 2-a. refer to the original data. management is considering using higher-quality components that would increase the variable expense by $2 per unit. the marketing manager believes that the higher-quality product would increase sales by 10% per month. calculate the change in total contribution margin. 2-b. should the higher-quality components be used? yes no