Question

A developmental psychologist hypothesizes that drinking soda effects the hyperactivity of children. Children in the experimental condition were given a can of soda during their afternoon break. Children in the control condition were not given any soda. The hyperactivity of the children was measured after the break. Below are partial SPSS results:



a) Compute the appropriate test statistic(s) to make a decision about H₀.
(Hint: Make sure to write down the null and alternative hypotheses to help solve the problem.)
test statistic =  ;  Decision:  ---Select--- Reject H0 Fail to reject H0

b) If appropriate, compute the CI. If not appropriate, input "na" for both spaces below.
[  ,  ]

c) Compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and/or select "na" below.
r² =  ;  ---Select--- na trivial effect small effect medium effect large effect

d) Make an interpretation based on the results.

Children that did not drink soda were significantly less hyperactive than those that did.Drinking soda significantly decreases the hyperactivity of children.     Drinking soda does not have a significant effect on the hyperactivity of children.

Answer 1