Question

the government of a large city needs to determine whether the citys residents will support the repair of several roads. the government has decided to conduct a survey of a sample of the citys residents. which one of the following procedures would be the most appropriate for obtaining a sample of the citys residents?
a survey a random sample of the residents who use public transportation.
b survey every tenth person to use the public restroom.
c survey the last 100 residents listed in the telephone directory.
d survey a random sample of persons within each neighborhood.

Explanation:

• Option A: Sampling only residents who use public transportation is a biased sample as it excludes those who don't use it.
• Option B: Sampling people using public restrooms is not representative of all city residents.
• Option C: Sampling the last 100 residents in the telephone directory is not a random or representative sample.
• Option D: A random sample of persons within each neighborhood helps ensure that different areas (and thus different types of residents) are represented, making the sample more likely to be representative of the entire city's residents.

Answer:

D. Survey a random sample of persons within each neighborhood.