document.write( "Question 847523: two dice are thrown twice,write sample space and find the probabilityof getting sum of : (a)5,(b)less than 8 ,(c)sum greater than 12,(d)sum greater than 7? \n" ); document.write( "

Algebra.Com's Answer #510516 by swincher4391(1107) $\"\"$ $\"About$

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The sample size for all of these is 36.\r
\n" ); document.write( "\n" ); document.write( "I suggest making a table to help illustrate all these probabilities\r
\n" ); document.write( "\n" ); document.write( " 1 2 3 4 5 6
\n" ); document.write( " -----------
\n" ); document.write( " 1|2 3 4 5 6 7
\n" ); document.write( " 2|3 4 5 6 7 8
\n" ); document.write( " 3|4 5 6 7 8 9
\n" ); document.write( " 4|5 6 7 8 9 10
\n" ); document.write( " 5|6 7 8 9 10 11
\n" ); document.write( " 6|7 8 9 10 11 12\r
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\n" ); document.write( "\n" ); document.write( "Now we answer the following questions.:\r
\n" ); document.write( "\n" ); document.write( "a) sum of 5. We notice there are 4 entries that result in a sum of 5. So 4/36 or 1/9.\r
\n" ); document.write( "\n" ); document.write( "b) less than 8. There are 21 entries in the table that have less than 8. So 21/36 or 7/12\r
\n" ); document.write( "\n" ); document.write( "c) greater than 12. Impossible. 0\r
\n" ); document.write( "\n" ); document.write( "d) greater than 7. There are 10 entries in the table that have greater than 7. so 10/36 or 5/18.\r
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