SOLUTION: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of 588 depressed individuals is selected and treated with Resithan, and 203 find rel

Question 503642: Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of 588 depressed individuals is selected and treated with Resithan, and 203 find relief from their depression. A random sample of 438 depressed individuals is independently selected from the first sample and treated with Exemor, and 177 find relief from their depression. Can we conclude, at the 0.1 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. Then fill in the table below.
Carry your intermediate computations to at least three decimal places and round your answers as specified in the table.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Two popular drugs used for the treatment of depression are Resithan and Exemor.
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A random sample of 588 depressed individuals is selected and treated with Resithan, and 203 find relief from their depression.
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A random sample of 438 depressed individuals is independently selected from the first sample and treated with Exemor, and 177 find relief from their depression.
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Can we conclude, at the 0.1 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?
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Ho: pr-pe >= 0
Ha: pr-pe < 0 (claim)
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I ran a 2-PropZtest on a TI-84 to get the following:
test stat: z = -1.9315
p-value:: 0.0267
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Conclusion: Since the p-value is greater than 1%, fail
to reject Ho.
The test results do not support the claim.
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Cheers,
Stan H.
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