Noland bought a fancy new smartphone. it was a different brand of phone than his old phone, so he spent quite a few frustrating hours learning to use the new one. the problem was that he kept trying to tap icons on the new phone in the places they had been on his old phone. noland's problem was most likely due to

Consider a treasury bill with a rate of return of 5% and the following risky securities: security a: e(r) = .15; variance = .0400 security b: e(r) = .10; variance = .0225 security c: e(r) = .12; variance = .1000 security d: e(r) = .13; variance = .0625 the investor must develop a complete portfolio by combining the risk-free asset with one of the securities mentioned above. the security the investor should choose as part of her complete portfolio to achieve the best cal would be a. security a b. security b c. security c d. security d