Statistics Solutions

[See Solution] The stimulant Ritalin has been shown to increase attention span and improve academic performance in children with ADHD. To demonstrate the

Question: The stimulant Ritalin has been shown to increase attention span and improve academic performance in children with ADHD. To demonstrate the effectiveness of the drug, a researcher selects a sample of n=25 children diagnosed with ADHD and measures each child’s attention span before and after taking the drug. The data show an average increase of attention span of Md= 6.8 minutes with standard deviation of s=5.5.

  1. Is this result sufficient to conclude that Ritalin has a significant effect on attention span? Use a two tailed test with a= .01.
  2. Compute r ² and estimate cohen’s d to measure the effect size of the drug.

Price: $2.99
Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


∴ Other downloads you may be interested in ∴

log in to your account

Forgot password?
Don't have a membership account?
REGISTER

reset password

Back to
log in

sign up

Back to
log in