Suppose the returns on your company are normally distributed.

The historical average share price return for your firm is 5.8 per cent with a standard deviation of 9.3 per cent. What is the approximate probability that your return will be less than –3.5 per cent in a given year? What range of returns would you expect to see 95 per cent of the time? What range would you expect to see 99 per cent of the time?