document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=455206>Question 455206</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the likehood of 25 cars out of 50 passing by will be red cars, having observed in the past the probability of being 0.28? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #312532 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=312532\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> what is the likehood of 25 cars out of 50 passing by will be red cars, having observed in the past the probability of being 0.28?\r<BR>\n" );
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document.write( "mean = 0.28<BR>\n" );
document.write( "std = sqrt[0.28*0.72/50] = 0.0635<BR>\n" );
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document.write( "z(25/50) = z(0.5) = (0.5-0.28)/0.0635 = 3.465<BR>\n" );
document.write( "===<BR>\n" );
document.write( "P(p > = 0.1/2) = P(z > 3.465) = 0.000265..<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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