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24 September, 06:22

Students in a large statistics class were randomly divided into two groups. The first group took the midterm exam in a room painted in pale green while the second group took the exam in a room painted bright yellow. The exam scores of the two groups were then compared. This experiment was not blind because:

A. the students knew which color the room in which they took the exam was painted.

B. students were randomized into the two groups.

C. the exam was too long.

D. some of the students did not study for the exam.

E. students were allowed to keep their eyes open while taking the exam.

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  1. 24 September, 06:42
    0
    A

    Step-by-step explanation:

    In this question, we are to select amongst the options which is the correct reason why the experiment conducted was not blind.

    Now when they say an experiment is blind, it means certain conditions that surround the carrying out of the experiment was unclear to the participants of the experiment.

    Now, we need to state the reason why the experiment was not blind. The experiment is said to be blinded if it is that the students were unaware of the color with which the room was painted. Since, it is impossible to blind the color of the paint of the exam room students will be aware of the color of the paint. Hence, they are not blinded.

    This makes option A the correct answer
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