Exam (elaborations)
BIO 130M Introduction to Environmental Science Quiz_Understanding_Experimental_Design
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- Arizona State University
BIO 130M Introduction to Environmental Science
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Quiz: Understanding Experimental DesignQuestion 1
pts
From SimBio Q 1.2. Q1.2 Suppose you decide to design an experiment to test your
friend’s hypothesis about classical music and studying. How will you define your
variables?
Independent variable: test performance. Dependent variable: study music
Independent variable: study music. Dependent variable: test performance
Independent variable: study music. Confounding variable: test performance
Both study music and test performance are potentially confounding variables.
Right. You are manipulating the study music, and so this is your independent or
treatment variable. The variable that changes as a result of your treatment is
hypothesized to be test score. You have to hold other test conditions constant in
this experiments to make sure they do not become confounding variables (such as
room temperature, test format, student gender, age and test preparation...).
This study source was downloaded by 100000881663784 from CourseHero.com on 09-10-2024 18:36:06 GMT -05:00
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, Question 2
pts
For the following question, which is the best hypothesis "Does exposure to radon (a
source of natural radiation) in your home cause an increased risk of cancer?"
People who have been exposed to radon have an increased rate of cancer, as
compared to people who have not been exposed.
Everyone who is exposed to radon will die from cancer.
I am immune to cancer because there is no history of cancer in my family.
People should not risk exposure to radon!
Cancer may be caused by many different factors, including exposure to radiation,
chemicals and too much stress in a person's life.
The best hypothesis relates the dependent variable (cancer) to the independent
variable (exposure to radon, a natural source of radiation).
Question 3
This study source was downloaded by 100000881663784 from CourseHero.com on 09-10-2024 18:36:06 GMT -05:00
https://www.coursehero.com/file/59318818/Quiz-Understanding-Experimental-Design/
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