Each Question on a Multiple-Choice Exam Has Four Choices

question 33

Multiple Choice

Each question on a multiple-choice exam has four choices. One of the choices is correct, worth four points. Another choice is wrong but carries partial credit of one point. The other two choices are wrong and worth negative one point. If a student picks answers at random, what is the expected value of his or her score for a problem?

• A)0.25
• B)1.25
• C)0.75
• D)1.50

---

Definitions:

Teratogens

Agents or factors that can cause malformation or defects in an embryo or fetus during pregnancy.

Opiates

A class of drugs derived from opium, used to relieve pain but can also lead to dependency and addiction.

Pathogens

Microorganisms or agents, such as bacteria, viruses, fungi, or parasites, that cause disease in their host.

Proximodistal

A pattern of growth and development where development starts at the center of the body and moves towards the extremities.