The answer is A, when simplifying the inequality
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If the analyst wants an average of all fastballs, it is not useful to measure other pitches, nor is it useful to limit it to a subset of the pitchers.
So, the sample should draw from all fastballs.
Answer:
Statistic, because it is a property of a sample and not the population.
Step-by-step explanation:
The difference between a parameter and an statistic is that the parameter is a property of a population distribution and an statistics is referred to a sample property.
For example, a sample mean is a statistic while a population mean is a parameter.
In t his case, the proportion is referring to the sample of 481 customers, so it is not a property of the population (altough we can use it to infere about the population), so this proportion (79%) is an statistic.
The characteristics that are related to Russia at the time of the Crimean War are;
serfs form majority of the population
outdated military
agricultural economy
absolute monarchy
The characteristics that are related to Western European social structure at the time of the Crimean War are;
constitutional monarchy
industrial economy
modern military
no serfs
Use A,B, and C for the childrens ages.
A (oldest child)
B=A-2
C=A-4
The sum of their ages is A+B+C. Substitute.
A+(A-2)+(A-4)
3A-6= sum of her childrens ages
