刘同学2020-02-26 21:33:30

Asume that a stock's price over the next two periods is as shown below. The initial value of the stock is $200. The probability of an up move in any given period is 30%, and the probability of a down move in any given period is 70%. Using the binomial model, the probability that the stock's price will be $201.20 at the end of two periods is closest to 老师，这个题怎么和二项式联系，麻烦再讲讲