document.write( "Question 472647: At a local college the business students run an investment club. Each fall they create investment portfolios in multiples of $1,000 each. Records from the past several years show the following probabilities of profits. In the list below, x = profits per $1,000 and P(x) = probability of earning that profit. Find the expected value of the profit in a $1000 portfolio.
\n" ); document.write( "x----------P(x)
\n" ); document.write( "0-------- 0.15
\n" ); document.write( "50--------0.35
\n" ); document.write( "100-------0.25
\n" ); document.write( "150-------0.20
\n" ); document.write( "200-------0.05\r
\n" ); document.write( "\n" ); document.write( " $81.00
\n" ); document.write( " $81.50
\n" ); document.write( " $82.00
\n" ); document.write( " $82.50 \n" ); document.write( "

Algebra.Com's Answer #324012 by robertb(5830) $\"\"$ $\"About$

You can put this solution on YOUR website!
0*0.15 + 50*0.35 + 100*0.25 + 150*0.20 + 200*0.05 = $82.50 \n" ); document.write( "

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