Question 8 (Same experiment as in 1.4) Investigators are interested in the relat

Question

Question 8

(Same experiment as in 1.4) Investigators are interested in the relationship between sleep apnea and Alzheimer’s disease. In order to more thoroughly understand the relationship, these investigators decide to recruit 50 participants with Alzheimer’s and 50 participants without Alzheimer’s, and look at their history of sleep apnea. For this study, the variables are:

Explanatory variable: Alzheimer’s status; and outcome: history of sleep apnea

Explanatory variable: history of sleep apnea; and outcome: Alzheimer’s status

Explanatory variable: with Alzheimer’s; and outcome: without Alzheimer's

Explanatory variable: with sleep apnea; and outcome: without sleep apnea

Explanatory variable: Alzheimer’s status; and outcome: history of sleep apnea

Explanatory variable: history of sleep apnea; and outcome: Alzheimer’s status

Explanatory variable: with Alzheimer’s; and outcome: without Alzheimer's

Explanatory variable: with sleep apnea; and outcome: without sleep apnea

Explanation / Answer

Explanatory variable: Alzheimer’s status, ; and outcome: history of sleep apnea

Explanatory variable: Alzheimer’s status, because it shows the independent variable, ie happening of Azheimer's disease is independent

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