The most effective in controlling the confounding variables is matched pairs design.
<h3>What is a matched pair design experiment?</h3>
A matched pairs design is when participants are matched based on shared characteristics that is of importance to the experiment. One member of the pair is put in the control group while the other is put in the experimental group.
Here are the options:
A completely randomized design experiment
A longitudinal observational study
A retrospective observational study
A matched-pair design experiment
To learn more about matched-pair design experiment, please check: brainly.com/question/23413412
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Hope this helps I tried to put the arrows where the answer goes
217.5 would be rounded to 218. If the last digit of a number is greater than 5, then it will round up.
Answer: I imagine that the question was: "What is the wrong answer between these choices?" Therefore, it is the third choice.
Explanation:
2(m∠PQS) ≠ (m∠RQS)
2(47°) ≠ 47°
94° ≠ 47°
Answer:
A, C, and E
Step-by-step explanation:
All the numbers being multiplied by 389,274 in those options are greater than 1