document.write( "Question 1111445: A computer program consists of two blocks written independently by
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document.write( "two different programmers. The first block has an error with probability
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document.write( "0.2. The second block has an error with probability 0.3. If the program
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document.write( "returns an error, what is the probability that there is an error in both
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document.write( "blocks? \n" );
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Algebra.Com's Answer #726449 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "I have many notices regarding this formulation, but the major question is THIS:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( " In order for the problem would be correctly posed as the \"Probability\" problem,\r\n" ); document.write( "\r\n" ); document.write( " it must say with which probability the code returns ERROR.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "In the current formulation, I could read it that this probability is 1, i.e. the code returns ERROR at each run.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( " In Probability problems, we do not consider the results of individual experiments - we consider statistics only . . . \r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "But if it returns ERROR at each run, then the problem with this code lies in other/different area.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Thinking about it, I have another question: Is it a joke problem ?\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "And I suspect it is . . . \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Excuse me if I am wrong: I am not an expert in Probability problems, having only elementary knowledge in it . . . \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Also, I think that the CORRECTLY posed problem must ask totally different question, namely:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( " At what probability the code will return the ERROR message ?\r\n" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |