Find test statistics: Find P-value: Conclusion: Construct a confidence interval suitable for testing the claim that the mean amount of​ strontium-90 from city​ #1 residents is greater than the mean amount from city​ #2 residents.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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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
175
188
210
206
206
194
158
159
179
205
157
189
 
 
 
 
 
 
 
               
 
 
 
 
 
 
 
             
After
162
179
179
173
173
148
159 163 147 143 152 155  

 

Find test statistics:

Find P-value:

Conclusion:

Construct a confidence interval suitable for testing the claim that the mean amount of​ strontium-90 from city​ #1 residents is greater than the mean amount from city​ #2 residents.
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