Which of following protocols is the one that is most likely to require irb review? a study to evaluate a newly designed wheelchair by asking elderly individuals to use it. a study to perform computer simulated stress tests on an artificial hip. a study to determine the effects of a pesticide on a plant. a study to implant a heart valve in a chimpanzee.

Your father's employer was just acquired, and he was given a severance payment of $375,000, which he invested at a 7.5% annual rate. he now plans to retire, and he wants to withdraw $35,000 at the end of each year, starting at the end of this year. how many years will it take to exhaust his funds, i.e., run the account down to zero? a. 22.50 b. 23.63 c. 24.81 d. 26.05 e. 27.35