The Ohio Department of Health (ODH) receives birth certificates for all births o

Question

The Ohio Department of Health (ODH) receives birth certificates for all births occurring in the state (about 140,000 per year). These reports are combined into annual statistical data files, which are used to calculate the statistics contained on the ODH website. ODH decides to conduct a study on the health of low birth weight infants in Ohio and makes a random selection of 200 low birth weight infants born in Ohio in 2012. What are the population and the sample for this study?

A. The population is all Ohio residents. The sample is all infants born in Ohio.

B. The population is all infants born in Ohio. The sample is all low birth weight infants.

C. The population is all low birth weight infants born in Ohio. The sample is the 200 infants selected for the study.

D. The population is all infants born in the United States. The sample is the infants born in Ohio.

Explanation / Answer

The answer is option C because population refers to the "target" group of people for which the study is to be conducted which in this case are all the low birth weight infants born in Ohio. The sample is the 200 infants selected out of the population for the study.

The answer cannot be option A because all of the Ohio residents are not taken into consideration for the studyand just the low birth weight infants,hence the population cannot be all the residents.

The answer cannot be option B because all the infants are not taken into consideration for the following study and hence it is not right to consider all, but the low birth weight infants.

The answer cannot be option D because we are not considered with the residents of the United States, but only the low birth weight infants of the state of Ohio.

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