金融会计类英文题,求大神帮助啊Harold is nearing retirement and has been man

金融会计类英文题,求大神帮助啊
Harold is nearing retirement and has been managing is retirement savings himself. Analyzing his performance history over a number of years, he has determined his average annual Internal Rate of Return is 11%, with a standard deviation is 16%.
His portfolio is now worth $300,000. Assume he makes no withdrawals or additional deposits, and keeps to the same investment strategy he has used, so that the return each year follows a normal distribution with mean 11% and standard deviation 16%. After 10 years,
1. what is the Expected value of the investment?
2. what is the probability that the investment will be worth less than its current value?
3. what is the probability that the investment will be worth more than $1,000,000?