MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of 

590

 depressed individuals is selected and treated with Resithan, and 

203

 find relief from their depression. A random sample of 

481

 depressed individuals is independently selected from the first sample and treated with Exemor, and 

179

 find relief from their depression. Can we conclude, at the 

0.05

 level of significance, that the proportion 

p1

 of depressed individuals taking Resithan who find relief from depression is less than the proportion 

p2

 of all depressed individuals taking Exemor who find relief from depression?

Perform a one-tailed test. 

The null hypothesis:
H0:
 
The alternative hypothesis:
H1:
 
The type of test statistic: (Choose one)ZtChi squareF      
     
The value of the test statistic:
(Round to at least three decimal places.)
 
The critical value at the 
0.05
 level of significance:
(Round to at least three decimal places.)
 
Can we conclude that the proportion of depressed individuals taking Resithan who find relief is less than the proportion taking Exemor who find relief?
 
Yes
 
 
No
 
 
 
 
 
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