A group of investigators are studying a treatment that can help reducing LDL Cholesterol level. The following data shows the LDL at the beginning and the end of the observation period from a sample of participants randomly selected from a specific patient population who received the treatment. Data: Subject ID 1 2 3 4 5 6 7 LDL at the beginning 145 133 153 173 164 161 158 LDL at the end 136 113 101 122 129 135 133 Perform a nonparametric signed rank test to test whether the median reduction in LDL (use LDL at the beginning minus LDL at the end) is greater than 26, at 5% level of significance. Please include output tables from statistical software that are useful in supporting and interpreting your result. (Hint: You can compute the differences first, and then follow the instruction in Signed Rank Test for One Sample video to test for median.) Null hypothesis: Alternative hypothesis: Report p-value and use it to draw the conclusion: [Paste software output here!]
A group of investigators are studying a treatment that can help reducing LDL Cholesterol level. The following data shows the LDL at the beginning and the end of the observation period from a sample of participants randomly selected from a specific patient population who received the treatment.
Data:
|
Subject ID |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
|
LDL at the beginning |
145 |
133 |
153 |
173 |
164 |
161 |
158 |
|
LDL at the end |
136 |
113 |
101 |
122 |
129 |
135 |
133 |
Perform a nonparametric signed rank test to test whether the
Null hypothesis:
Alternative hypothesis:
Report p-value and use it to draw the conclusion:
[Paste software output here!]
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