
Concept explainers
To identify: The sample and the population. Also classify the sample as simple, stratified or systemic.

Answer to Problem 5CYU
Sample: Cards selected by Greg.
Population: All baseball cards.
The sample is a simple random sample.
Explanation of Solution
Given:
Greg divides his rookie baseball cards by teams. Then he randomly selects cards and records the players’ RBIs.
Here, the sample is all cards that Greg selects and all baseball cards that Greg owns forms the population. Since Greg randomly selects cards and not necessarily from each teams, the sample is a simple random sample.
Chapter 12 Solutions
Algebra 1
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