<PRE><B>Question 537116</B>
X 25 50 75 100 Total

P(x) 0.20 0.40 0.30 0.10  
Based on this data, what is the daily average number of tubes she will rent?

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Average: 0.20*25 + 0.40*50 + 0.30*75 + 0.10*100 = 57.5
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Cheers,
Stan H.
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