A landscaper wants to find the answer to the question “How much time do people in Raleigh, North Carolina, spend doing yard work in one week?” He asks the owners of all 120 houses in a Raleigh neighborhood. Which best describes the accuracy of the results of the survey?
Answer
A
The survey results will be inaccurate because lawns in one neighborhood do not represent all types of lawns in a large city.
B
The survey results will be inaccurate because the entire population of Raleigh should have been surveyed.
C
The survey results will be accurate because the sample represents the population and the population is the target of the survey.
D
The survey results will be accurate because the sample size was large enough to represent the population.
Explanation
The survey includes all 120 houses in one neighborhood, but the target population is people throughout Raleigh. Yard size, housing, and residents’ habits may differ from one neighborhood to another, so this sample may not represent the whole city. Surveying every person in Raleigh is not necessary, but the sample should be drawn from across the city.
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