Question
Asked Jan 18, 2020
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Reported Versus Measured In a survey of 1046 adults conducted by Bradley Corporation, subjects were asked how often they wash their hands when using a public restroom, and 70% of the respondents said “always.”

a. Identify the sample and the population.

b. Why would better results be obtained by observing the hand washing instead of asking about it?

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Expert Answer

Step 1

(a)

Sample:

Sample is the subset of the subjects chosen from the whole population.

The given survey is based on the 1,046 adults, which is the subset from the population of adults. Hence, the sample is 1,046 adults.

Population:

Population consists of the complete subjects that are included in the study for making inferences.

The given survey is based all the adults who are included in the study and this is represent the population.

Hence, the population is all the adults in the study.

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