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Chapter 1: Problem 29

State whether the data are best described as a population or a sample. The US Department of Transportation announces that of the 250 million registered passenger vehicles in the US, \(2.1 \%\) are electro-gas hybrids.

Short Answer

Expert verified
The data best describes a population because it refers to all registered passenger vehicles in the US and not just a subset of them.

Step by step solution

01

Definitions

Understand what population and sample mean in terms of statistical study. A population refers to all individuals or items of interest in a statistical study, whereas a sample is a subset of the population.
02

Assess the data

Look at the data provided. The data provided states that of the 250 million registered passenger vehicles in the US, \(2.1 \%\) are electro-gas hybrids.
03

Compare the data with the definitions

Referring to the data provided, it can be seen that information about all registered vehicles is included, and no specific subset is selected. So in this case, the data represents the entire group or population of interest (all registered passenger vehicles in the US), not a subset (sample).

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