document.write( "Question 1077450: Suppose the random variable X represents the annual salaries in dollars of a group of teachers. X={$30,000, $40,000, $50,000}
\n" ); document.write( "P(30,000) =0.6;
\n" ); document.write( "P(40,000) =0.3;
\n" ); document.write( "P(50,000) =0.1;
\n" ); document.write( "Find the expected value E (x) \n" ); document.write( "

Algebra.Com's Answer #691928 by srinivas.g(540) $\"\"$ $\"About$

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Expected value = sum of X* P(X)
\n" ); document.write( " = 30000 * 0.6+40000*0.3+50000*0.1
\n" ); document.write( " = 35000
\n" ); document.write( " Hence expected value = $ 35000 \n" ); document.write( "

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