document.write( "Question 622122: Determine whether each of the distributions given below represents a probability distribution. Justify your answer.
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "(A)
\n" ); document.write( " x
\n" ); document.write( " 1
\n" ); document.write( " 2
\n" ); document.write( " 3
\n" ); document.write( " 4
\n" ); document.write( "
\n" ); document.write( "P(x)
\n" ); document.write( " 1/4
\n" ); document.write( " 1/12
\n" ); document.write( " 1/3
\n" ); document.write( " 1/6
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "(B)
\n" ); document.write( " x
\n" ); document.write( " 3
\n" ); document.write( " 6
\n" ); document.write( " 8
\n" ); document.write( "
\n" ); document.write( "P(x)
\n" ); document.write( " 0.2
\n" ); document.write( " 2/5
\n" ); document.write( " 0.3
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( " \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " (C)
\n" ); document.write( " x
\n" ); document.write( " 20
\n" ); document.write( " 30
\n" ); document.write( " 40
\n" ); document.write( " 50
\n" ); document.write( "
\n" ); document.write( "P(x)
\n" ); document.write( " 3/10
\n" ); document.write( " -0.1
\n" ); document.write( " 0.5
\n" ); document.write( " 0.3
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #391134 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
\n" );
document.write( "Hi,
\n" );
document.write( "a. Yes, probabilities total to 1
\n" );
document.write( "b. No, probabilities do not total to 1  (9/10)
\n" );
document.write( "c. No, Probabilites  must be 0 ≤ p(x)≤ 1  P(x=30) = -.1 , not allowed \n" );
document.write( "

\n" );