document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=936156>Question 936156</A>: <I><SPAN STYLE=\"word-break: break-all;\"> there are 300 students enrolled in business statistics.historically, exam scores are normally distributed with a standard deviation of 30.9. your instructor randomly selected sample of 30 examinations and finds a mean of 74.2. determine a 90% confidence interval for the mean score for all students taking the course ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569625 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=569625\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ME = 1.645(30.9/sqrt(300) = 2.9<BR>\n" );
document.write( "CI: 74.2 - 2.9 < u < 74.2 + 2.9 </SPAN>\n" );
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