suppose that observations on a stock price (in dollar) at the end of each 15 consecutive weeks are as follows: 30.2, 32.0, 31.1, 30.1, 30.2, 30.3, 30.6, 33.0, 32.9, 33.0, 33.5, 35.3, 33.7,33.5, 33.2 what is the estimated annualized volatility and standard error? a. 20.79% b.34% and .0473 c.25% and .0743 d. 25% and .0473