Does daily exposure to bright light make subjects more alert? A study was conducted in which...
Does daily exposure to bright light make subjects more alert? A study was conducted in which the daily habits of 30 college students were documented, focusing on how much time they spent in brightly lit rooms or outside on sunny days.After a week, the subjects were given a computer-based alertness test on which they receive a score on a 0 to 100 point scale.Their scores were compared with how much time they spent in brightly lit places that week.
Select all that apply.
Select one or more:
a. The explanatory variable is how much time the students spent in brightly lit places.
b. This is best described as an observational study.
c. The explanatory variable is the score on the computer-based test.
d. This study is best described as an experiment.
e. The response variable is the score on the computer-based test.
f. The response variable is how much time the students spent in brightly lit places.
Homework Answers
Answer -
a. The explanatory variable is how much time the students spent in brightly lit places.
b. This is best described as an observational study.
e. The response variable is the score on the computer-based test.
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between-subjects, within-subjects, etc).
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What is the dependent variable, and what type is it (ex:
interval, ratio, nominal, ordinal)
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will be appreciated thank you in advance!
1) What type of experimental design is this? (ex:
between-subjects, within-subjects, etc).
2) Is this an observational study or a manipulative study?
3) What is the dependent variable, and what type is it (ex:
interval, ratio, nominal, ordinal)
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Please answer as many as the following questions as you can, I
really need to study this for my final exam. Your help will be
appreciated thank you in advance!
What type of experimental design is this? (ex:
between-subjects, within-subjects, etc).
Is this an observational study or a manipulative study?
What is the dependent variable, and what type is it (ex:
interval, ratio, nominal, ordinal)
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Source: What is the source objective, is the source
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Sampling: Does the method influence the validity of the
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