Questions: Some college campuses have started using "puppy therapy" to help reduce stress among students, according to a Psychology Today article. Suppose you design an experiment to test the hypothesis that puppy therapy is an effective stress reducer for students, within the context of a 6-section introductory biology course at your school. Each section has 12 students. Students in three of the sections get to play together with a pack of therapy dogs for 15 minutes at the beginning of the section recitation (or "lab") meeting. The other three sections simply observe 15 minutes of quiet free time instead. Students rate their stress levels immediately after the 15-minute period. Then you measure the percentage of students that report being "very stressed out" for each section, and you compare the average percentage between sections that played with puppies and those that didn't. In your puppy therapy experiment, what is the experimental unit? - A single student - A section in the course - The entire course Check Answer In your puppy therapy experiment, how many replicates are in the experimental group? Check Answer

Some college campuses have started using "puppy therapy" to help reduce stress among students, according to a Psychology Today article. Suppose you design an experiment to test the hypothesis that puppy therapy is an effective stress reducer for students, within the context of a 6-section introductory biology course at your school. Each section has 12 students. Students in three of the sections get to play together with a pack of therapy dogs for 15 minutes at the beginning of the section recitation (or "lab") meeting. The other three sections simply observe 15 minutes of quiet free time instead. Students rate their stress levels immediately after the 15-minute period. Then you measure the percentage of students that report being "very stressed out" for each section, and you compare the average percentage between sections that played with puppies and those that didn't. In your puppy therapy experiment, what is the experimental unit? - A single student - A section in the course - The entire course Check Answer In your puppy therapy experiment, how many replicates are in the experimental group? Check Answer
Transcript text: Some college campuses have started using "puppy therapy" to help reduce stress among students, according to a Psychology Today article. Suppose you design an experiment to test the hypothesis that puppy therapy is an effective stress reducer for students, within the context of a 6-section introductory biology course at your school. Each section has 12.students. Students in three of the sections get to play together with a pack of therapy dogs for 15 minutes at the beginning of the section recitation (or "lab") meeting. The other three sections simply observe 15 minutes of quiet free time instead. Students rate their stress levels immediately after the 15 -minute period. Then you measure the percentage of students that report being "very stressed out" for each section, and you compare the average percentage between sections that played with puppies and those that didn't. Q1.4. In your puppy therapy experiment, what is the experimental unit ? A single student A section in the course The entire course Check Answer Q1.5. In your puppy therapy experiment, how many replicates are in the experimental group? $\square$ Check Answer
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Solution

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Solution Steps

Step 1: Identify the Experimental Unit

The experimental unit is the smallest division of the experimental material such that any two units may receive different treatments. In this experiment, the treatment (puppy therapy) is applied to entire sections of the course, not individual students or the entire course as a whole.

Final Answer

The experimental unit is a section in the course.

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