One way to choose a representative sample in a survey is to
a. obtain informed consent from subjects.
b. select a very small sample from a population.
c. place all the subjects in the control group.
d. select people at random from a population.

You inherit $500,000 from your parents and want to use the money to supplement your retirement. you receive the money on your 65th birthday, the day you retire. you want to withdraw equal amounts at the end of each of the next 25 years. what constant amount can you withdraw each year and have nothing remaining at the end of 25 years if you are earning 6% interest per year? a. $20,000 b. $28,489 c. $33,574 d. $39,113