Questions: Question A study is planned to research the effects of drinking coffee on hours of sleep. Would an experimental or observational study design be more appropriate? Select the correct answer below: An observational study should be used because it is not possible to control whether or not a person drinks coffee. An observational study should be used because it is not possible to control the number of hours of sleep a person has. An experimental study should be used where the consumption of coffee is the experimental factor. An experimental study should be used where the number of hours of sleep is the experimental factor. FEEDBACK MORE INSTRUCTION

Question
A study is planned to research the effects of drinking coffee on hours of sleep. Would an experimental or observational study design be more appropriate?

Select the correct answer below:
An observational study should be used because it is not possible to control whether or not a person drinks coffee.
An observational study should be used because it is not possible to control the number of hours of sleep a person has.
An experimental study should be used where the consumption of coffee is the experimental factor.
An experimental study should be used where the number of hours of sleep is the experimental factor.
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Transcript text: Question A study is planned to research the effects of drinking coffee on hours of sleep. Would an experimental or observational study design be more appropriate? Select the correct answer below: An observational study should be used because it is not possible to control whether or not a person drinks coffee. An observational study should be used because it is not possible to control the number of hours of sleep a person has. An experimental study should be used where the consumption of coffee is the experimental factor. An experimental study should be used where the number of hours of sleep is the experimental factor. FEEDBACK MORE INSTRUCTION
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Solution

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Solution Steps

Step 1: Understanding the Study Design

In this question, we need to determine whether an experimental or observational study design is more appropriate for researching the effects of drinking coffee on hours of sleep.

Step 2: Analyzing the Options
  1. Observational Study: This type of study involves observing subjects in their natural environment without manipulation. It is suitable when it is not feasible or ethical to control the variables of interest.

  2. Experimental Study: This involves manipulating one or more variables to determine their effect on other variables. It is suitable when the researcher can control the variables and randomize the subjects.

Step 3: Evaluating the Context

In the context of this study, the primary interest is to understand the causal relationship between coffee consumption and sleep duration. An experimental study would allow the researcher to control the consumption of coffee and observe its direct effects on sleep, making it possible to establish causality.

Final Answer

The most appropriate study design for researching the effects of drinking coffee on hours of sleep is an experimental study where the consumption of coffee is the experimental factor.

\[ \boxed{\text{An experimental study should be used where the consumption of coffee is the experimental factor.}} \]

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