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...Stat practice problems stepanov uiuc dalpiaz solutions the following are a number of that may be helpful for completing homework and will likely very useful studying exams let x y random variables with e sd corr find var cov xy b suppose you wish to invest in two stocks which both have current price values these one month described by say expected variances respectively we also assume correlation between is given c denote your initial investment invested shares can bought up any percentages w percentage stock finally p value portfolio after then where an expression variance weights minimize risk hint classical theory simply quantified d minimizes equally weighted i anytown gallon milk varies from day according normal distribution mean standard deviation package oreo cookies prices independent probability on higher than has pz z alex planning oreos party his imaginary friends he buys gallons packages paid less...