document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1164019>Question 1164019</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3)	Fidelity records the number of X-Trails sold each day.  This data is used in calculating the following probability distribution of daily sales: \r<BR>\n" );
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document.write( "		x	P(x)<BR>\n" );
document.write( "		0	0.1<BR>\n" );
document.write( "		1	0.1<BR>\n" );
document.write( "		2	0.2<BR>\n" );
document.write( "		3	0.2<BR>\n" );
document.write( "		4	0.3<BR>\n" );
document.write( "		5	0.1\r<BR>\n" );
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document.write( "a.	Find the probability that the number sold tomorrow will be between 2 and four (inclusive)<BR>\n" );
document.write( "b.	Find the probability that the number sold tomorrow will be between 2 (inclusive) and four.<BR>\n" );
document.write( "Please help me solve this question<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 #788309 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=788309\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
document.write( "The answer to part A is 0.5<BR>\n" );
document.write( "The answer to part B is 0.4\r<BR>\n" );
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document.write( "To get these answers, we add up the P(x) values. However, we only add up specific ones based on the restrictions mentioned.\r<BR>\n" );
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document.write( "Part A says \"between 2 and four (inclusive)\", which I interpret to mean <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2+%3C+x+%3C=+4 ALIGN=MIDDLE  ALT=\"2+%3C+x+%3C=+4\"   DISABLED_style= \"max-width:90%; height:auto;\" >. So x can't equal 2, but it can equal 4. This is the same as saying <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3+%3C=+x+%3C=+4 ALIGN=MIDDLE  ALT=\"3+%3C=+x+%3C=+4\"   DISABLED_style= \"max-width:90%; height:auto;\" > only when x is an integer. We'll be adding the P(x) values when x = 3 and x = 4, so we get 0.2+0.3 = 0.5\r<BR>\n" );
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document.write( "Part B says \"between 2 (inclusive) and four\", so we have <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2+%3C=+x+%3C+4 ALIGN=MIDDLE  ALT=\"2+%3C=+x+%3C+4\"   DISABLED_style= \"max-width:90%; height:auto;\" > now which is the same as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2+%3C=+x+%3C=+3 ALIGN=MIDDLE  ALT=\"2+%3C=+x+%3C=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" > only when x is an integer. We'll be adding the P(x) values when x = 2 and x = 3 to get 0.2+0.2 = 0.4 <BR>\n" );
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