An Economics Professor Randomly Selected 100 Millionaires in the United

question 18

Multiple Choice

An economics professor randomly selected 100 millionaires in the United States. The average age of these millionaires was 54.8 years. If the standard deviation of the entire population of millionaires is 7.9 years, find the 95% confidence interval for the mean age of all United States millionaires.

---

Definitions:

Progesterone

Sex hormone produced by ovaries; prepares a female body for pregnancy and helps maintain a pregnancy.

Estrogens

Sex hormones secreted by ovaries; function in reproduction and cause development of female secondary sexual characteristics.

Corpus Luteum

A temporary endocrine structure in female ovaries that is involved in the production of relatively high levels of progesterone, moderate levels of estradiol, inhibin A, and small amounts of estrogen.

Testes

Male reproductive organs that produce sperm and hormones, such as testosterone.