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Hoochie [10]
3 years ago
7

A researcher posts a magazine advertisement offering $30 in exchange for participation in a short study. The researcher accepts

the first three 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 not a random sample of the population.
B. It is a valid sample because the first three people were selected to participate. C. It is a valid sample because money was offered to participants.
D. It is not a valid sample because it is only a short study.
Mathematics
2 answers:
Lesechka [4]3 years ago
8 0

Answer:

It is A

Step-by-step explanation:

matrenka [14]3 years ago
7 0
The answer to your question is A
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jenyasd209 [6]

Answer:

Answers are below!

Step-by-step explanation:

(2 + g) (8)

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Add a 8 after the 2, and flip.

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Add another 7, then flip.

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Use the distributive property.

a (b + c) = ab + ac

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Simplify, you get 16m + 8.

Use the distributive property.

a (b + c) = ab + ac

a = 6x

b = y

c = z

= 6xy - 6xz is the answer.

\mathrm{Apply\:the\:distributive\:law}:\quad \\\:a\left(b+c\right)=ab+ac

a=-3,\:b=2b,\:c=2a

=-3\cdot \:2b+\left(-3\right)\cdot \:2a

Apply minus plus rules.

=-3\cdot \:2b+\left(-3\right)\cdot \:2a

Multiply the numbers.

3 x 2 = 6

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