document.write( "Question 1167769: A bank manager has noticed that the probability distribution for X = number of
\n" ); document.write( "persons in line to use the ATM machine when he leaves his office at night is shown below:
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\n" ); document.write( "x 0 1 2 3 4
\n" ); document.write( "p(x)=P(X = x) .10 .10 .40 .30 .10\r
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Algebra.Com's Answer #792383 by mastersimon(1) $\"\"$ $\"About$

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multiply x by probability and add them.
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