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Answer :
Answer:
a. Population - 1. the 52 water draws
b. Sample - 4. 7/52 lead measurements
c. Parameter - 2. 7 micrograms per deciliter
d. Statistic - 3. 5 micrograms per deciliter
Step-by-step explanation:
If the value is from a population, it is a parameter.
Otherwise, if the value is from a sample, it is a statistic.
A population is an entire group of people, or of something, while a sample is a small number of observations from this group.
In this question:
The entire population is the measures drawn from the 52 points in the city's system.
In the entire system, the average is no more than 7 micrograms per deciliter. This is a value from the entire population, so this is a parameter.
To found the average of 5 micrograms, she took 7 of these measurements. So the 7 measurements are the sample and the average os 5 micrograms is a statistic.
So the correct matching is:
a. Population - 1. the 52 water draws
b. Sample - 4. 7/52 lead measurements
c. Parameter - 2. 7 micrograms per deciliter
d. Statistic - 3. 5 micrograms per deciliter
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