document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1205517>Question 1205517</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If you solve the question below, I'll be appreciated.\r<BR>\n" );
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document.write( "A study on the length of time a person brushes their teeth is conducted on a large population of adults. The mean brushing time is \mu and the standard deviation is \sigma. A simple random sample of 270 adults is considered.<BR>\n" );
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document.write( "(a) The mean of the sampling distribution is ? the mean of the population.\r<BR>\n" );
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document.write( "(b) The standard deviation of the sampling distribution is ? the standard deviation of the population. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #842378 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=842378\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "A study on the length of time a person brushes their teeth is conducted on a large population of adults. <BR>\n" );
document.write( "The mean brushing time is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mu ALIGN=MIDDLE  ALT=\"mu\"   DISABLED_style= \"max-width:90%; height:auto;\" > and the standard deviation is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sigma ALIGN=MIDDLE  ALT=\"sigma\"   DISABLED_style= \"max-width:90%; height:auto;\" >. <BR>\n" );
document.write( "A simple random sample of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=270 ALIGN=MIDDLE  ALT=\"270\"   DISABLED_style= \"max-width:90%; height:auto;\" > adults is considered.\r<BR>\n" );
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document.write( "(a) The mean of the sampling distribution is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=equal ALIGN=MIDDLE  ALT=\"equal\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+to+ ALIGN=MIDDLE  ALT=\"+to+\"   DISABLED_style= \"max-width:90%; height:auto;\" >the mean of the population.<BR>\n" );
document.write( "(b) The standard deviation of the sampling distribution is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=less ALIGN=MIDDLE  ALT=\"less\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+than ALIGN=MIDDLE  ALT=\"+than\"   DISABLED_style= \"max-width:90%; height:auto;\" > the standard deviation of the population.\r<BR>\n" );
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document.write( "Explanation:<BR>\n" );
document.write( "means are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=equal+ ALIGN=MIDDLE  ALT=\"equal+\"   DISABLED_style= \"max-width:90%; height:auto;\" >to each other<BR>\n" );
document.write( "standard deviation is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=always ALIGN=MIDDLE  ALT=\"always\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+less ALIGN=MIDDLE  ALT=\"+less\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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