(All Steps) In an anorexia study, 29 girls received cognitive therapy. The resulting weight changes had a mean of 3 lbs and a standard deviation of 7.32
Question: In an anorexia study, 29 girls received cognitive therapy. The resulting weight changes had a mean of 3 lbs and a standard deviation of 7.32 lbs. Test the null hypothesis that the therapy has no effect on the weight of girls.
Deliverable: Word Document 
![[See] A study of 13 children with](/images/solutions/MC-solution-library-61700.jpg "[See] A study of 13 children with asthma compared single inhaled")
[See] A study of 13 children with asthma compared single inhaled
Solution: Proportions. For a test of null: p=0.5, the z-test
(See) For a test of null: p=0.5, the sample proportion is 0.35
![[Solution Library] In a study to assess](/images/solutions/MC-solution-library-61703.jpg "[Solution Library] In a study to assess the effect of a drug on PMS")
[Solution Library] In a study to assess the effect of a drug on PMS
Solution: Do women do more housework? Sex Sample Size Mean Stan.
T-test for two Means - Unknown Population Standard Deviations - MathCracker.com