Question 945555
<pre>
X           0     1       2      3       4 
P(X)       0.12   0.16   0.24   0.30    0.18 
</pre>


Multiply each X value by its corresponding P(X) value 


0*0.12 = 0
1*0.16 = 0.16
2*0.24 = 0.48
3*0.30 = 0.90
4*0.18 = 0.72


Now add up the products: 


0+0.16+0.48+0.90+0.72 = 2.26


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So the mean is <font color="red">2.26</font>