Question

for each of the following, determine whether the group is a sample or a population.
a. the participants in a study of a new cholesterol drug.
b. the drivers who received a speeding ticket in kansas city last month.
c. people on welfare in cook county (chicago), illinois.
d. stock of the largest 30 companies traded in the u.s. stock market.

Explanation:

• a. The participants are a subset of all people who could use the drug, so it is a sample.
• b. This group includes all drivers who got speeding tickets in that area/time, so it is a population.
• c. This group includes all welfare recipients in the specified county, so it is a population.
• d. This group is a subset of all U.S. traded stocks, so it is a sample.

Answer:

a. Sample
b. Population
c. Population
d. Sample