Question: Usingthe Anorexia data fileatthetextwebsite: (a) Test H0: 1 = 2 against Ha: 1 2 for theweightchangeswiththefamilyandcognitive behavioraltherapies.Reportandinterpretthe P-value,andgivethedecisionfor = 0.05. If thedecisionisinerror,whattypeoferrorisit? (b)

Usingthe Anorexia data fileatthetextwebsite:

(a) Test H0: μ1 = μ2 against Ha: μ1 ≠ μ2 for theweightchangeswiththefamilyandcognitive behavioraltherapies.Reportandinterpretthe P-value,andgivethedecisionfor α = 0.05.

If thedecisionisinerror,whattypeoferrorisit?

(b) Showhowthetestresultrelatestothe95%confidenceintervalforthedifferenceofmeans.
Explain howtheconfidenceintervalismoreinformative.

(c) Inthecontextofthisstudy,whatwouldbea(i)TypeIerror,(ii)TypeIIerror?

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