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. H0:µd=____ ,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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