Please help with this question below. Thank you.

Determine the percentage of replacement income you can expect in retirement by checking http://www.wsharpe.com. Check the retirement worksheet to determine the replacement income an annuity purchased at retirement would generate. (Go to the Web site, select worksheets, and then select retirement.) Choose three different sets of variables in the boxes provided to see how these affect your replacement income percentage. Write up a summary briefly discussing your conclusions. Then check http://www.prudential.com/ (Products and Services, Investments, Annuities) and provide a recommendation with respect to the purchase of an annuity as a guarantee of retirement income. Explain your recommendation.