document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=421339>Question 421339</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Students grades were normally distributed with a mean of 73 and a standard deviation of 11.<BR>\n" );
document.write( "a. 7.93 percent of the students received grades of A. what is the minimum score needed to receive a grade of A?<BR>\n" );
document.write( "b. Students who made 57.93 or lower on the exam failed the course. What percent of students failed the course?<BR>\n" );
document.write( "c. If 69.5 percent of the syudents received grades of C or better, what is the minimum score of those who received a C? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #294246 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=294246\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Students grades were normally distributed with a mean of 73 and a standard deviation of 11.<BR>\n" );
document.write( "a. 7.93 percent of the students received grades of A. what is the minimum score needed to receive a grade of A?<BR>\n" );
document.write( "Find the z-value with a right tail of 7.93%<BR>\n" );
document.write( "invNorm(1-0.0793) = 1.4098<BR>\n" );
document.write( "Find the corresponding x-value using x = zs+u<BR>\n" );
document.write( "----<BR>\n" );
document.write( "x = 1.4098*11 + 73 = 88.51<BR>\n" );
document.write( "-------------------------------------<BR>\n" );
document.write( "b. Students who made 57.93 or lower on the exam failed the course. What percent of students failed the course?<BR>\n" );
document.write( "Same process as with part \"a\":<BR>\n" );
document.write( "Find the z-value of 57.93<BR>\n" );
document.write( "Find the corresponding x-value.<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "c. If 69.5 percent of the syudents received grades of C or better, what is the minimum score of those who received a C?<BR>\n" );
document.write( "Same process as with part \"a\" and part \"b\".<BR>\n" );
document.write( "================================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );