document.write( "Question 665579: I am desperate for some HELP!
\n" ); document.write( "Determine whether each of the distributions given below represents a probability distribution.
\n" ); document.write( "Justify your answers.
\n" ); document.write( "(A)
\n" ); document.write( "x_____|___1_____2_____3_______4
\n" ); document.write( "P (x) …| 1/5 ….5/12….1/3………1/6
\n" ); document.write( "(B)
\n" ); document.write( " X____| ___3_____6________8
\n" ); document.write( "P (x) | …0.2….2/5…………0.3
\n" ); document.write( "(C)
\n" ); document.write( "X____|___20_____35____40____50
\n" ); document.write( "P(x) | …..0.3…….-0.1…..0.5…….0.3
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Algebra.Com's Answer #413946 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

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document.write( "Hi,
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document.write( "the idea is too check to see if:
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document.write( "1) the probabilites in @ case total 1
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document.write( "2) there is no negative probabilities listed as an option\r
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document.write( "A   1/5 + 5/12 + 1/3 + 1/6 = 12/60 + 25/60 + 20/60 + 10/60 = 67/60 ≠ 1
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document.write( "B   0.2 + 2/5 + 0.3 = 2/10 + 4/10 + 3/10 = 9/10 ≠  1
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document.write( "C   P(x)is   -0.1  not possible... cannot have a 'negative' probability  \n" );
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