document.write( "Question 1178195:
\n" ); document.write( "Doctors believe that 70% of a certain type of operation are successful nationally. In a particular hospital, 50 of these operations were observed and 31 of them were successful. At a=0.05 is this hospital’s success rate different from the national average?\r
\n" ); document.write( "\n" ); document.write( "a.Yes because the z score of - 1.234 is inside the rejection region
\n" ); document.write( "b.No because the z score of - 1.234 is outside the rejection region
\n" ); document.write( "c.No because the z score of - 1.165 is outside the rejection region
\n" ); document.write( "d.Yes because the z score of - 1.165 is inside the rejection region
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Algebra.Com's Answer #807394 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi
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document.write( "Ho:  p = .7
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document.write( "Ha:  p < .7
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document.write( "sample:  n = 50 mean = 31/50 =  .62
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document.write( "Ïƒ = 0.05, 0r  .95 (z = 1.96) 
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document.write( "  = -1.234
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document.write( "|-1.234| < 1.96
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document.write( "Is this hospital’s success rate different from the national average?
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document.write( "(Reject Ho?)
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document.write( "b. No because the z score of - 1.234 is outside the rejection region
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document.write( "Wish You the Best in your Studies.
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