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Author Question: A researcher conducts a study to determine whether or not taking Vitamin C prevents colds. What is ... (Read 99 times)

jwb375

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A researcher conducts a study to determine whether or not taking Vitamin C prevents colds. What is the explanatory variable in this study?
 a. Whether or not one takes Vitamin C.
  b. Whether or not one gets colds.
  c. Whether or not one is a participant in the study.
  d. Whether or not one knows which treatment one is taking.

Question 2

A researcher asked random samples of 50 kindergarten teachers and 50 12th grade teachers how much of their own money they spent on school supplies in the previous school year. They wanted to see if teachers at one grade level spend more than teachers at the other grade level. In this study, it turns out that 12th grade teachers generally earn more money than kindergarten teachers. The variable income of the teacher' is an example of
 a. a dependent variable.
  b. a confounding variable.
  c. a response variable.
  d. a normal variable.



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AaaA

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Answer to Question 1

A

Answer to Question 2

B



jwb375

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Both answers were spot on, thank you once again



AaaA

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Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

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