document.write( "Question 403229: Hello, I am struggling with the following questions if anyone can help it would be greatly appreciated. \r
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document.write( "Find the mean of the distribution shown.
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document.write( "x 0 3 5
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document.write( "P(x) 0.36 0.40 0.24\r
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document.write( "The following distribution is not a probability distribution because
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document.write( "x -5 -4 -3 -2 -1
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document.write( "P(x) 0.11 0.16 0.42 0.16 0.30\r
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document.write( "The following distribution is not a probability distribution because
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document.write( "x -5 -4 -3 -2 -1
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document.write( "P(x) 0.20 0.20 –0.23 0.54 0.29\r
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document.write( "Find the mean of the distribution shown.
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document.write( "x 1 2
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document.write( "P(x) 0.46 0.54\r
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document.write( "Find the mean of the distribution shown.
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document.write( "x -3 -2 -1 0
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document.write( "P(x) 0.19 0.24 0.40 0.17\r
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document.write( "Find the mean of the distribution shown.
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document.write( "x 2 3 4
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document.write( "P(x) 0.30 0.24 0.46 \n" );
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Algebra.Com's Answer #285172 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! I'll do one of each of the two types of problems \n" ); document.write( "and leave the rest to you. \n" ); document.write( "-----\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Find the mean of the distribution shown. \n" ); document.write( "x 0 3 5 \n" ); document.write( "P(x) 0.36 0.40 0.24 \n" ); document.write( "--- \n" ); document.write( "To determine the mean: \n" ); document.write( "1st: Multiply each x value by its probability \n" ); document.write( "2nd: Add the products to get the mean \n" ); document.write( "x-bar = 0*36 + 3*0.40 + 5*0.24 \n" ); document.write( "x-bar = 0 + 1.2 + 1.2 \n" ); document.write( "x-bar = 2.4 \n" ); document.write( "-------------------------------- \n" ); document.write( "============================================\r \n" ); document.write( "\n" ); document.write( "The following distribution is not a probability distribution because \n" ); document.write( "x -5 -4 -3 -2 -1 \n" ); document.write( "P(x) 0.11 0.16 0.42 0.16 0.30 \n" ); document.write( "--- \n" ); document.write( "Rules: \n" ); document.write( "1st: Each probability must be between 0 and 1 \n" ); document.write( "2nd: The sum of the probabilities must be 1. \n" ); document.write( "---- \n" ); document.write( "Your Problem: The sum is > 1 so this is not a probability distribution. \n" ); document.write( "================================================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "===========\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The following distribution is not a probability distribution because \n" ); document.write( "x -5 -4 -3 -2 -1 \n" ); document.write( "P(x) 0.20 0.20 –0.23 0.54 0.29 \n" ); document.write( "Find the mean of the distribution shown. \n" ); document.write( "x 1 2 \n" ); document.write( "P(x) 0.46 0.54 \n" ); document.write( "Find the mean of the distribution shown. \n" ); document.write( "x -3 -2 -1 0 \n" ); document.write( "P(x) 0.19 0.24 0.40 0.17 \n" ); document.write( "Find the mean of the distribution shown. \n" ); document.write( "x 2 3 4 \n" ); document.write( "P(x) 0.30 0.24 0.46 \n" ); document.write( " \n" ); document.write( " |