A company that manufactures car seats completes quality control tests per government regulations. The quality control department randomly selects 20% of the seats manufactured to evaluate safety conditions. Of those seats, 0.0005% indicated a safety problem. Which of the following describes the population and sample?
Answer
A
The population is 20% of the car seats and the sample is 0.0005% of the car seats.
B
The population is 20% of the car seats and the sample is 100% of the car seats.
C
The population is 100% of the car seats and the sample is 0.0005% of the car seats.
D
The population is 100% of the car seats and the sample is 20% of the car seats.
Explanation
The population is the entire group the company wants to learn about: all the car seats manufactured, or 100% of them. The sample is the subset actually selected for testing, which is 20% of the seats. The 0.0005% figure describes the tested seats that showed a safety problem, not the sample size.
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