document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1094896>Question 1094896</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A report in 2010 indicates that Americans between the ages of 8 and 18 spend an average of &#956; = 10 hours per day using some sort of electronic devices such as smart phones, computers, or tablets. Assume that the distribution of times is normal with a standard deviation of &#963; = 2.5 hours and find the following values.\r<BR>\n" );
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document.write( "A. What is the probability of selecting an individual who uses electronic devices  more than 12 hours a day? <BR>\n" );
document.write( "So far for this one, I have done (9-10)/ 2.5= 1.8. I am not sure what to do from here. I am pretty sure I have to subtract a z score amount from the z table, but I'm not really sure how to figure that out. <BR>\n" );
document.write( "B. What proportion of 8- to 18-year-old Americans spend between 8 and 12 hours per day using electronic devices? P(5<X<10) = ?<BR>\n" );
document.write( "I am really confused by this question, I'm not sure where to start.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #834596 by </B><A HREF=/tutors/aboutme.mpl?userid=sophi.riv><B>sophi.riv(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sophi.riv><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=834596\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  </SPAN>\n" );
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