Explanation:
Contamination can have undesirable consequences in real experiments, some of them are related to the feelings that may arise in the research participants, the contamination bias reduces the differences between the research groups, and can cause a comparison between the treatments of each different group, the which can generate conflicts and rivalries on the part of groups that consider themselves to be inferior to others. These contamination-related problems can significantly interfere with the research results.
Answer: The answer is E, which is 48
Explanation:
In the summer, the mixture is one part washer fluid and three parts water = 1:3
in the winter the mixture is two parts washer fluid to one part water = 2:1
Since we're calculating for winter mixture and we've 24 ounces of summer mixture
2/1 = X/24
By cross multiply
1*X = 2*24
X= 48
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Medical results are valid for twelve months from the date of the exam. The answer is A.
