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Author Question: A researcher conducts a study to determine whether or not taking Vitamin C prevents colds. What is ... (Read 109 times)

jwb375

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on: Jul 24, 2018
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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Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

B


jwb375

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Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


AaaA

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Reply #3 on: Jul 24, 2018
Great! Please up vote :D


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