document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1055003>Question 1055003</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Doctors nationally believe that 68% of a certain type of operation are successful.  In a particular hospital, 47 of these operations were observed and 37 of them were successful.  At                         = .05, is this hospital's success rate different from the national average?\r<BR>\n" );
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document.write( "            A)      No, because the test value 0.93 is in the noncritical region.\r<BR>\n" );
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document.write( "            B)      Yes, because the test value 0.93 is in the critical region.\r<BR>\n" );
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document.write( "            C)      No, because the test value 1.58 is in the noncritical region.\r<BR>\n" );
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document.write( "            D)      Yes, because the test value 1.58 is in the noncritical region. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #670199 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=670199\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ho: p = 0.68 (claim)<BR>\n" );
document.write( "Ha: p &#8800;  0.68<BR>\n" );
document.write( "sample proportion = p-hat = 37/47 = 0.7872<BR>\n" );
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document.write( "test stat:: z(0.7872) = (0.7872-0.68)/sqrt[0.68*0.32/47] = 1.58 <BR>\n" );
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document.write( " At = .05, is this hospital's success rate different from the national average<BR>\n" );
document.write( "C) No, because the test value 1.58 is in the noncritical region (  we do not reject Ho)<BR>\n" );
document.write( "p-value = P(z > 1.58) = 0.057<BR>\n" );
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