Suppose Standard Inc. had the following stock prices from to to t5. Compute (i) the monthly returns over the given sample period, (ii) the expected return, and (iii) standard deviation. Price Dividend to $142 ti $192 $2.5 t2 $215 $2.2 t3 $224 $2.0 t4 $208 $2.1 t5 5 $215 $2.2