The following table is obtained:
Sample 1 | Sample 2 | Difference = Sample 1 - Sample 2 | |
159 | 163 | -4 | |
189 | 155 | 34 | |
164 | 148 | 16 | |
179 | 147 | 32 | |
157 | 152 | 5 | |
175 | 162 | 13 | |
183 | 144 | 39 | |
195 | 176 | 19 | |
158 | 159 | -1 | |
169 | 186 | -17 | |
209 | 163 | 46 | |
205 | 143 | 62 | |
Average | 178.5 | 158.167 | 20.333 |
St. Dev. | 18.118 | 13.009 | 22.995 |
n | 12 | 12 | 12 |
given :
Mean () = 20.333
Standard deviation ( ) = 22.995
Sample size (n) = 12
a)
b)
t - test statistic :
t = =
t = 3.063
c)
p-value = 0.0108
d)
p-value is less than level of significance (alpha = 0.05)
i.e. level of significance greater than p-value.
e)
Conclusion :- Reject the null hypothesis (H0).
F)
There is sufficient or enough evidence to support the claim that the drug is effective in lowering systolic blood pressure.
please help desperately need it 7) When subjects were treated with a drug, their systolic blood...
When subjects were treated with a drug, their systolic blood pressure readings (in mm Hg) were measured before and after the drug was taken. Results are given in the table below. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Using a 0.05 significance level, is there sufficient evidence to support the claim that the drug is effective in lowering systolic blood pressure? Before: 188, 210, 157,...
Question 10 3 pts Captopril is a drug designed to lower systolic blood pressure. When subjects were treated with this drug, their systolic blood pressure readings (in mm Hg) were measured before and after the drug was taken. Results are given in the accompanying table. Using a 0.01 significance level, is there sufficient evidence to support the claim that captopril is effective in lowering systolic blood pressure? I J Subject Before After А 200 191 B 174 170 с 198...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d=(blood pressure before taking new drug)−(blood pressure after taking new drug). Use a significance level of α=0.1 for the test. Assume that the systolic blood pressure levels are normally...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d = (blood pressure before taking new drug)-(blood pressure after taking new drug). Use a significance level of a = 0.05 for the test. Assume that the systolic blood...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d=(blood pressure before taking new drug)?(blood pressure after taking new drug) . Use a significance level of ?=0.05 for the test. Assume that the systolic blood pressure levels are...
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A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? 0.05 for the test. Assume that the systolic Let d = (blood pressure before taking new drug-blood pressure after taking new drug. Use a significance level of ? blood pressure...
21.HE.B: Captopril is a drug designed to lower systolic blood pressure. When subjects were treated with this drug, their systolic blood pressure readings (in mm Hg) were measured before and after the drug was taken. The results are in the accompanying table on the next page. (a) Go through “The Drill” for paired t-tests (Use a 0.05 α-level and the corresponding confidence interval.) The Drill: Assumptions and Conditions Paired Data Condition The data must be paired. Only use pairing if...
A pharmaceutical company.claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d (blood pressure before taking new drug)-(blood pressure after taking new drug). Use a significance level of a 0.05 for the test. Assume that the systolic blood pressure levels are...
Patient 1 2 3 4 5 6 7 8 9 Blood Pressure (before) 161 189 205 201 187 161 169 157 200 Blood Pressure (after) 152 169 193 195 163 141 149 142 178 A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 22 hours after taking the drug are shown in the table below. Is there enough evidence to...