A doctor wants to know if a blood pressure medication is effective. Six subjects have their...
A doctor wants to know if a blood pressure medication is effective. Six subjects have their blood pressures recorded. After twelve weeks on the medication, the same six subjects have their blood pressure recorded again. For this test, only systolic pressure is of concern. Test at the 1% significance level. (Calculate "after" − "before.")
| Patient | A | B | C | D | E | F |
|---|---|---|---|---|---|---|
| Before | 161 | 162 | 165 | 162 | 166 | 171 |
| After | 158 | 159 | 166 | 160 | 167 | 170 |
A) What is the test statistic? (If using the z distribution round your answer to two decimal places, and if using the t distribution round your answer to three decimal places.)
B) What is the sample mean difference? (Round your answer to two decimal places.)
Homework Answers
The statistical software output for this problem is:
Hence,
a) Test statistic = -1.557
b) Sample mean difference = -1.17
Add Answer to:
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