Independent Simple Random Samples Are Taken to Test the Difference

question 39

Multiple Choice

Independent simple random samples are taken to test the difference between the means of two populations whose variances are not known. The sample sizes are n₁ = 32 and n₂ = 40. The correct distribution to use is the

• A)binomial distribution
• B)t distribution with 72 degrees of freedom
• C)t distribution with 71 degrees of freedom
• D)t distribution with 70 degrees of freedom

---

Definitions:

Deoxyribonucleic Acid

The molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.

Chromosomes

Rod-shaped portions of DNA that are organized in 23 pairs.

Gametes

Reproductive cells (sperm and oocytes) that contain half the genetic material of an organism, which unite during fertilization to form a new organism.

Zygote

The new cell formed by the process of fertilization.