Reducing Systolic Blood Pressure by Taking A New Drug
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Reducing Systolic Blood Pressure by Taking A New Drug
Deliverable 05 – Worksheet
Instructions: The following worksheet describes two examples – one is an example for independent samples and the other one for dependent samples. Your job is to demonstrate the solution to each scenario by showing how to work through each example in detail. You are expected to explain all of the steps in your own words.
Independent samples: One of our researchers wishes to determine whether people with high blood pressure can reduce their systolic blood pressure by taking a new drug we have developed. The sample data is shown below, where represents the mean blood pressure of the treatment group and represents the mean for the control group. Use a significance level of 0.01 and the critical value method to test the claim that the drug reduces the blood pressure. We do not know the values of the population standard deviations.
Treatment Group Control Group n1 78 n2 70 186.7 201.9 s1 38.5 s2 39.8
- Write the hypotheses in symbolic form, determine if the test is right-tailed, left-tailed, or two tailed and explain why.
Answer and Explanation
Enter your step-by-step description and explanations here.
- Calculate the critical value and the test statistic.
Answer and Explanation
Enter your step-by-step description and explanations here.
- Decide about the null hypothesis and explain your reasoning, then make a conclusion about the claim in nontechnical terms.
Answer and Explanation
Enter your step-by-step description and explanations here.
Dependent samples
This same new drug was tested on another group, but this time the test was done before the drug was administered, and then tested after the drug was given to the same group. The results are shown in the table below:
Subject Before After 1 199 189 2 174 170 3 195 177 4 171 167 5 179 159 6 182 151 7 193 176 8 208 183 9 185 159 10 155 145 11 169 146 12 208 177 Use the data above with a significance level of 0.05 to test the claim that for the populations of blood pressures before and after the drug, the differences have a mean greater than 0 mm Hg (so the claim is that the drug helps lower the blood pressure). Use the P-Value method to determine whether or not to reject the null hypothesis and state your conclusion.
- Write the hypothesesin symbolic form, determine if the test is right-tailed, left-tailed, or two tailed and explain why.
Answer and Explanation
Enter your step-by-step description and explanations here.
- Calculate the test statistic and the P-Value.
Answer and Explanation
Enter your step-by-step description and explanations here.
- Decide about the null hypothesis and explain your reasoning, then make a conclusion about the claim in nontechnical terms.
Answer and Explanation
Enter your step-by-step description and explanations here.
RUBRIC
Excellent Quality
95-100%
Introduction 45-41 points
The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Literature Support
91-84 points
The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.
Methodology
58-53 points
Content is well-organized with headings for each slide and bulleted lists to group related material as needed. Use of font, color, graphics, effects, etc. to enhance readability and presentation content is excellent. Length requirements of 10 slides/pages or less is met.
Average Score
50-85%
40-38 points
More depth/detail for the background and significance is needed, or the research detail is not clear. No search history information is provided.
83-76 points
Review of relevant theoretical literature is evident, but there is little integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are included. Summary of information presented is included. Conclusion may not contain a biblical integration.
52-49 points
Content is somewhat organized, but no structure is apparent. The use of font, color, graphics, effects, etc. is occasionally detracting to the presentation content. Length requirements may not be met.
Poor Quality
0-45%
37-1 points
The background and/or significance are missing. No search history information is provided.
75-1 points
Review of relevant theoretical literature is evident, but there is no integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are not included in the summary of information presented. Conclusion does not contain a biblical integration.
48-1 points
There is no clear or logical organizational structure. No logical sequence is apparent. The use of font, color, graphics, effects etc. is often detracting to the presentation content. Length requirements may not be met
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