What am I missing to figure this out????? Please show all work, so I can figure out how to do this.

Interpret the findings:A research team has developed a new medication to treat ADHD. They think that their new medicine will be more effective than the current medication. The team asks local doctors to do a study in which newly diagnosed children with ADHD are matched with other children taking the current medication based on symptoms and physical attributes of the children. The research team will then test all the children after one year to determine the effectiveness of the treatments with a standardized symptom score-sheet (higher numbers = more severe symptoms).

What test should be used and why?

z-score 1 sample t Dependent t Independent t

Given the following information compute the test: M=5.18, Variance = 2.11

What is the cutoff values?________________________________

Do the test:

Should the researcher: Retain H₀ Reject H₀