document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=929504>Question 929504</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The time spent by American adults using their cell phones or computers per day averages 11 hours with a standard deviation of 1.5 hours. The probability that a random sample of 9 American adults averages more than 12 hours is approximately<BR>\n" );
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document.write( " 	A	 	0.9772<BR>\n" );
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document.write( "	B		0.0228<BR>\n" );
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document.write( "	C		0.67<BR>\n" );
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document.write( "	D		0.2514<BR>\n" );
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document.write( "	E		0.7486<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 #564333 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=564333\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=blue+%28x+-+mu%29%2Fblue%28sigma%2Fsqrt%28n%29%29 ALIGN=MIDDLE  ALT=\"z+=blue+%28x+-+mu%29%2Fblue%28sigma%2Fsqrt%28n%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=blue+%2812+-+11%29%2Fblue%281.5%2Fsqrt%289%29%29 ALIGN=MIDDLE  ALT=\"z+=blue+%2812+-+11%29%2Fblue%281.5%2Fsqrt%289%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 2<BR>\n" );
document.write( "P(z > 2) = normalcdf(2,100) = .0228<BR>\n" );
document.write( "B. </SPAN>\n" );
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