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Tanzania [10]
2 years ago
10

A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts

the first five people who respond to the advertisement. Which of the following statements is true about the sample?
A.
It is not a valid sample because it is only a short study.
B.
It is a valid sample because money was offered to participants.
C.
It is a valid sample because the first five people were selected to participate.
D.
It is not a valid sample because it is not a random sample of the population.
Mathematics
1 answer:
Anni [7]2 years ago
5 0
The answer is C because it is unbiased because it was the first 5 people
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1. Understand what multi-variable equations are.

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Solving for three variables can actually be done in the same way that equations with two variables are solved. You can use elimination and substitution, they will just take a little longer than solving for two, but are the same process.
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