2- You are interested in the effectiveness of a new blood pressure drug. You manage to collect a sample of 7 people's blood pressure before and after using the drug. The drug is effective if it lowers the average blood pressure by more than 2 points. Before 16 14 18 15 14 16 17 After 12 12 15 14 11 11 13 a. Construct and interpret a 95% confidence interval for the differences in population means. b. Test for the effectiveness of the drug at a=0.05.

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2- You are interested in the effectiveness of a new blood pressure drug. You manage to collect a
sample of 7 people's blood pressure before and after using the drug. The drug is effective if it
lowers the average blood pressure by more than 2 points.
Before
16
14
18
15
14
16
17
After
12
12
15
14
11
11
13
a. Construct and interpret a 95% confidence interval for the differences in population means.
b. Test for the effectiveness of the drug at a=0.05.
Transcribed Image Text:2- You are interested in the effectiveness of a new blood pressure drug. You manage to collect a sample of 7 people's blood pressure before and after using the drug. The drug is effective if it lowers the average blood pressure by more than 2 points. Before 16 14 18 15 14 16 17 After 12 12 15 14 11 11 13 a. Construct and interpret a 95% confidence interval for the differences in population means. b. Test for the effectiveness of the drug at a=0.05.
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