document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1203842>Question 1203842</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The monthly incomes for 12<BR>\n" );
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document.write( "randomly selected​ people, each with a​ bachelor's degree in​ economics, are shown on the right. Complete parts​ (a) through​ (c) below.<BR>\n" );
document.write( " Assume the population is normally distributed.<BR>\n" );
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document.write( "4450.56<BR>\n" );
document.write( "4596.08<BR>\n" );
document.write( "4366.27<BR>\n" );
document.write( " <BR>\n" );
document.write( "4455.71<BR>\n" );
document.write( "4151.02<BR>\n" );
document.write( "3727.27<BR>\n" );
document.write( "4283.79<BR>\n" );
document.write( "4527.36<BR>\n" );
document.write( "4407.24<BR>\n" );
document.write( "3946.73<BR>\n" );
document.write( "4023.58<BR>\n" );
document.write( "4221.79<BR>\n" );
document.write( "Question content area bottom<BR>\n" );
document.write( "Part 1<BR>\n" );
document.write( "​(a) Find the sample mean.<BR>\n" );
document.write( "x overbar<BR>\n" );
document.write( "equalsenter your response here <BR>\n" );
document.write( "​(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 #839699 by </B><A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><B>math_tutor2020(3817)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><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=839699\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
document.write( "To find the sample mean, add up the values and then divide by the sample size.\r<BR>\n" );
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document.write( "Example:<BR>\n" );
document.write( "The sample mean of {1,2,7} is (1+2+7)/3 = 10/3 = 3.33 approximately\r<BR>\n" );
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document.write( "I recommend pasting the given data into a spreadsheet. Then you can add the values quickly with the command named \"SUM\".<BR>\n" );
document.write( "Another command is called \"AVERAGE\" to directly compute the sample mean.\r<BR>\n" );
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document.write( "For example, if your data values are in cells A1 through A12, then:<BR>\n" );
document.write( "<font color=red>=SUM(A1:A12)</font> will compute the sum of the items in cells A1 through A12<BR>\n" );
document.write( "<font color=red>=AVERAGE(A1:A12)</font> will compute the arithmetic mean of the items in cells A1 through A12<BR>\n" );
document.write( "Do not forget about the equal sign up front. It is needed to evaluate the command. Otherwise, the spreadsheet will interpret it as plaintext.\r<BR>\n" );
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document.write( "I'll let the student do the computations I have described. <BR>\n" );
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