Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

roguemichelle Group Title

In a study of human development, investigators showed two movies that were different types to groups of children. Crackers were available in a bowl, and the investigators compared the number of crackers eaten by children watching both movies. One movie was shown at 8 AM (right after the children had breakfast) and the other at 11 AM (right before the children had lunch). It was found that during the movie shown at 11 AM, more crackers were eaten than during the movie shown at 8 AM. The investigators concluded that the different types of movies had different effects on appetite. Two variables in a study are said to be confounded if A. one cannot separate their effects on a response variable. B. they are highly correlated. C. they do not have a normal distribution. D. one of them is a placebo.

  • one year ago
  • one year ago

  • This Question is Open
  1. oldrin.bataku Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    (A). Confounded variables both impact the response, and without a proper experiment, you will be unable to determine whether your chosen independent/experimental variable istruly having the same effect. Here the experiment lacks control... the hunger of students right before lunch is going to generally impact the results.

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.