Let S(n) denote the price of a stock n days from now. An investor believes that the ratio S(n)=S(0) will be lognormally distributed with parameters and .

Given that the present price is 45, determine the investor's estimate that the price be below 35 in 20 days time.

u= 0.00165n 0 = 0.052vn u= 0.00165n 0 = 0.052vn