document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1079142>Question 1079142</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a clinical trial, 25 out of 876 patients taking a prescription drug daily complained of flulike symptoms. Suppose that it is known that 2.5% of patients taking competing drugs complain of flulike symptoms. Is there sufficient evidence to conclude that more than 2.5% of this drug's users experience flulike symptoms as a side effect at the alpha equals a=0.05 level of  significance? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #693503 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=693503\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> usual hypothesis test<BR>\n" );
document.write( "will make it 2-way<BR>\n" );
document.write( "test statistic is a z<BR>\n" );
document.write( "reject if |z|>1.96<BR>\n" );
document.write( "z=(0.0285-0.025)/sqrt (.025*.0975)/876; sqrt term, std error, is 0.00527<BR>\n" );
document.write( "=.6635<BR>\n" );
document.write( "fail to reject null hypothesis, p=0.50 <BR>\n" );
document.write( "insufficient evidence to conclude there is a difference.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );