A child psychologist is interested in determining if a new type of cognitive therapy will reduce behavior problems among children with ADHD more than Ritalin will in another group of children with ADHD.

(a) H0:congnitiveRetalinThenull hypothesis, H0 is the general statement or default position that there is no relationship between two measured phenomena, or no association among groups and it is the opposite of the alternate hypothesis.

so here the null hypothesis is cognitive therapy would not reduce behavior problems among children with ADHD more than Ritalin will in another group of chinldren with ADHD.

(b)H1:congnitive

A research hypothesis (H₁) is the statement created by researchers when they speculate upon the outcome of a research or experiment. so here the research hypothesis is cognitive therapy will reduce behavior problems among children with ADHD more than Ritalin will in another group of chinldren with ADHD.

Given the followingp-values, would you reject or retain the null hypothesis if you want to be 95% confident that you are not making a Type I error?

1. p = .05
2. p = 1.0
3. p = .10
4. p = .025
5. p = .075