document.write( "Question 1128660: The mean number of typing in a certain newspaper was found to be four per page. Find the probability that;
\n" ); document.write( "(1)Exactly three errors will be found on a page .
\n" ); document.write( "(2)At most there typing errors will be found on a page.
\n" ); document.write( "(3)More than three errors Will be found on a page. \n" ); document.write( "

Algebra.Com's Answer #745250 by ikleyn(52814) $\"\"$ $\"About$

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\n" ); document.write( "The mean number of typing in a certain newspaper was found to be four per page. Find the probability that;
\n" ); document.write( "(1) Exactly three errors will be found on a page .
\n" ); document.write( "(2) At most $\"highlight%28cross%28there%29%29\"$ three typing errors will be found on a page.
\n" ); document.write( "(3) More than three errors Will be found on a page.
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\n" ); document.write( "\n" ); document.write( "        I just saw (and solved) several similar problems in this forum.\r
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\n" ); document.write( "\n" ); document.write( "        They are not exactly and precisely mathematical, since the condition is not completed and requires some additions.\r
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\n" ); document.write( "\n" ); document.write( "        Again, they are not exactly and precisely mathematical, but mostly serve to exercise your \"common sense\".\r
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\n" ); document.write( "\n" ); document.write( "        They require you to reformulate the condition in a way the problem to obtain its sense.\r
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\n" ); document.write( "\n" ); document.write( "        And they require such an addition \r
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document.write( "           a)  \"to be in style\"  (which means \"to be consistent\"),  and  \r\n" );
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document.write( "           b)  to be likelihood.\r\n" );
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\n" ); document.write( "\n" ); document.write( "        So, again, it is not \"the pure Mathematics in its pure instance\" - it is the common sense hypothesizing
\n" ); document.write( "        to make right formulation and to get the problem solved     ( = to get a likelihood solution ).\r
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\n" ); document.write( "\n" ); document.write( "        After this introduction, I can now move to the solution.\r
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document.write( "An appropriate hypotheses is to assume that we have random variable X = \"the number of errors in a page\" \r\n" );
document.write( "with integer random values as uniformly distributed with the minimum value of 0 and the maximum value of 8.\r\n" );
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document.write( "Then the mean average  is exactly 4, as the problem states, and we are \r\n" );
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document.write( "    - \"in style\",   and\r\n" );
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document.write( "    - the condition becomes \"self-consistent\" and \"self-closed\".\r\n" );
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document.write( "Then the answer to question (1) is   P(X=3) = ;  the answer to question (2) is  P(X<=3) = ;  and the answer to question (3) is  P(x > 3) = .\r\n" );
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