I would like to know the formulas of this results, show the work please, because my professor give me the answers my real need is to know the formulas to get those results, if you can help me I appreciate, thank you. Like the very first question calculate : (a) EV(d1): 10.3 but how do I get that 10.3 ? I need to understand how to calculate the Expected Value. p(s1)=0.3 ; p(s2)= 0.7