document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1058230>Question 1058230</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p.  Use the given values of n and p to find the mean u and standard deviation o.  Also, use the range rule of thumb to find the minimum usual value u - 2o and the maximum usual value u +2o\r<BR>\n" );
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document.write( "n = 1552, p = 1/4<BR>\n" );
document.write( "u = 388<BR>\n" );
document.write( "o=   17.1        (Round to one decimal place as needed)<BR>\n" );
document.write( "u - 2o =  353.8  (Round to one decimal place as needed)<BR>\n" );
document.write( "u + 2o = 422.2 (Round to one decimal place as needed)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #673258 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=673258\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The mean is 1552*1/4=388<BR>\n" );
document.write( "The variance is 388*(3/4), or np(1-p)<BR>\n" );
document.write( "That is 291<BR>\n" );
document.write( "The sd is the sqrt (291)=17.06<BR>\n" );
document.write( "Mean + 2sd is 422.1 (I round at the end)<BR>\n" );
document.write( "Mean - 2sd is 353.9<BR>\n" );
document.write( "What you did was fine. </SPAN>\n" );
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