A bank estimates that its profit next year is normally distributed with a mean of

0.8% of assets and the standard deviation of 2% of assets. How much equity

(as a percentage of assets) does the company need to be (a) 99% sure that it

will have a positive equity at the end of the year and (b) 99.9% sure that it will

have positive equity at the end of the year? Ignore taxes.