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Eduardwww [97]
3 years ago
9

How are observational studies of populations different from experimental studies? What can be learned from observational populat

ion studies?
SAT
1 answer:
WINSTONCH [101]3 years ago
5 0

Answer:

In an observational study, we measure or survey members of a sample without trying to affect them. In a controlled experiment, we assign people or things to groups and apply some treatment to one of the groups, while the other group does not receive the treatment.

Explanation:

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Complete the proof given ab*be=cb*bd prove abc dbe.
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The complete proofs with all the reasons and statements; have been enumerated below

<h3>What are triangle proofs?</h3>

From the attached triangle, we can complete the proofs as follows;

Statement 1; AB * BE = CB * BD

Reason 1; Given

Statement 2; CB/BE = AB/BD

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What is the sum of 12 – 5i and –3 + 4i? –16 + 63i 9 – i 9 – 9i 15 – 9i.
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2 years ago
Which of the following is an accurate statement about sample size
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The option that is an accurate statement about Sample Size is; A: A larger sample size is needed for increased accuracy.

<h3>What is true about Sample Size?</h3>

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Now, the smaller the sample size, the lesser the accuracy as you have possibility of biased research from just a handful of people. However, the larger the sample, the greater the degree of accuracy of the research.

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Complete question is;

Which of the following is an accurate statement about sample size?

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c. Sample size is a constant percentage of the population size.

d. Sample size is independent of the confidence interval.

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