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Four scenarios of statistical studies are given below. Decide which study uses a population parameter.

A. As part of her senior project, Kaisa asked 84 of her classmates if they voted in the last presidential election. 39 said yes.

B. 15% of the attendees at a town council meeting in a rural area reported not using the internet on a daily basis.

C. In a study of 89 children diagnosed with cancer at Leeland Memorial Hospital, 70 children were cancer-free five years after their first diagnosis.

D. A study prompted by the increase in the use of assisted reproductive technology looked at hospital records across the country. The report stated that 3.2% of births in the U.S. last year resulted in twins.


Sagot :

Final answer:

In statistical studies, understanding and identifying population parameters is crucial. The study on the percentage of twin births in the U.S. exemplifies the use of a population parameter.


Explanation:

Population parameter refers to the characteristics of the entire population being studied. In the given scenarios, the study that uses a population parameter is the one where a report states that 3.2% of births in the U.S. last year resulted in twins. This statistic reflects a characteristic of the entire U.S. population's birth rate.


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