
Concept explainers
To identify: The sample and the population. Then classify the type of data collection used.

Answer to Problem 1ACYP
Sample: The rats selected for research.
Population: All rats.
Type of data collection used: Observational data.
Explanation of Solution
Given:
A research facility analyzed two groups of rats to determine their reaction to sugar.
Since the rats selected for the research represent the reaction of every rat to sugar, all rats form the population. There are two samples here. The first sample represents the reaction of rats to food with no sugar and the second sample represents reaction of rats to food with sugar. The type of data collection used here is observational study as the research facility can draw any conclusion about the behavior of rats only after observing them.
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Algebra 1
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