document.write( "Question 1174545: Can you explain this problem to me?\r
\n" ); document.write( "\n" ); document.write( "EXAMPLE 4: Suppose a pair of dice are rolled. What is the expected value of the random variable which assigns to each element in the sample space the sum of the dice?
\n" ); document.write( "I understand the range of (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
\n" ); document.write( "I don't understand how they got the following:
\n" ); document.write( "Px(2)= P (x=2) = 1/36
\n" ); document.write( "Px(3)= P (x=3) = 2/36
\n" ); document.write( "Px(8)= P (x=8) = 5/36
\n" ); document.write( "Px(9)= P (x=9) = 4/36
\n" ); document.write( "

Algebra.Com's Answer #799959 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "If you want to learn this subject,  look into the lesson\r
\n" ); document.write( "\n" ); document.write( "    - Rolling a pair of fair dice \r
\n" ); document.write( "\n" ); document.write( "in this site.  You will find there many other similar solved problems.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-II in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The referred lesson is the part of this online textbook under the topic  \"Solved problems on Probability\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Save the link to this textbook together with its description\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-II
\n" ); document.write( "https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "into your archive and use when it is needed.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );