Students in a large statistics class were randomly divided into two
groups. The first group took the midterm exam with soft music
playing in the background while the second group took the exam
with no music playing. The exam scores of the two groups were
then compared.
This experiment was not blind because:
- students were allowed to keep their eyes open while
taking the exam.
- the exam was too long.
- the students knew whether or not music was playing while
they were taking the exam.
- some of the students did not study for the exam.
- students were randomized into the two groups.

Question

19-12-2022
Mathematics

contestada

Students in a large statistics class were randomly divided into two
groups. The first group took the midterm exam with soft music
playing in the background while the second group took the exam
with no music playing. The exam scores of the two groups were
then compared.
This experiment was not blind because:
- students were allowed to keep their eyes open while
taking the exam.
- the exam was too long.
- the students knew whether or not music was playing while
they were taking the exam.
- some of the students did not study for the exam.
- students were randomized into the two groups.

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qwarrow qwarrow · Answer 1 · 2022-12-22T16:05:55+01:00

The correct option is B. The students knew whether or not music was playing while they were taking the exam

Given,

The class was split into two groups.

The first group took the midterm exam while background music was playing, and the second group took the exam without any background music.

In a blind experiment, any information that might affect the subjects is kept secret until the experiment is over. The pupils in this instance are aware of their group membership.

In order to answer this question, an experiment is carried out to see how music affects learning. One group of students studies while background music is playing, while the other group does not.

However, because of the background music playing here, the pupils are aware of which group they belong to. The experiment's outcomes are impacted by this.

Therefore the correct option is B. The students knew whether or not music was playing while they were taking the exam.

For more details on blind experiments follow the link:

https://brainly.com/question/17142876

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