Answer to Question #194484 in Statistics and Probability for Daniela(me)

Question

8.A researcher wants to investigate whether different forms of exercise can be used to help hyperactive children. A group of 90 children are randomly assigned to one of three groups. The first group will just do their normal exercise. The second group will be given an additional exercise routine (moderate). The third group will be given an additional exercise routine (strenuous). At the end of a four-month period parents will be asked to evaluate their children's ability to participate in calm activities.

a)What are the experimental units or subjects?

b)What is the factor (explanatory variable)?

c)What is the response variable?

d)Is this a blind study? Explain.

Answer 1

A. Children

B.Exercise

C.whether different forms of exercise can be used to help hyperactive children

D.yes. information about the test is masked (kept) from the participant, to reduce or eliminate bias, until after a trial outcome is known.