PLEASE ANSWER WITH EXCEL FUNCTIONS!!!!!!!!

Suppose the returns on long-term corporate bonds are normally distributed. Based on the historical record, what is the approximate probability that your return on these bonds will be less than -2.1 percent in a given year? What range of returns would you expect to see 95 percent of the time? What range would you expect to see 99 percent of the time? Input area: (Use cells A6 to B8 from the given information to complete this question. You must use the built-in Excel function to answer this question.)