Question

An investigator wants to test the effectiveness of a new weight loss medication at reducing BMI...

An investigator wants to test the effectiveness of a new weight loss medication at reducing BMI (kg/m2). Suppose the following table represents the results from a SRS of individuals enrolled in the study. Assume a normal approximation is acceptable. (α=.05)(6 points)

Patient

BMI Pre-Test (kg/m2)

BMI Post-Test (kg/m2)

A

30.5

26.5

B

32.8

28.5

C

35.6

28.4

D

34.7

25.7

E

33.9

29.4

A) What type of test design is this?

B) Write our your null and alternative hypotheses. H0d=____  ,Ha: µd≠___

C) Calculate a tstat.  (example answer#.##)

D) t-crit =

E) pvalue=

G) Reject or Failed to reject the null Hypothesis:

H) Construct a 95% confidence interval, and provide an interpretation. Does your interval further support your decision in the hypothesis test above?  (example answer #.####, #.####)

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