Question 945521
<table border=1>
  <tr>
    <td><font size=4 color="black">x</font></td>
    <td>0</td>
    <td>1</td>
    <td>2</td>
    <td>3</td>
    <td>4</td>
    <td>5</td>
    <td>6</td>
  </tr>
  <tr>
    <td><font size=4 color="black">P(X = x)</font></td>
    <td>0.55</td>
    <td>0.15</td>
    <td>0.10</td>
    <td>0.10</td>
    <td>0.04</td>
    <td>0.03</td>
    <td>0.03</td>
  </tr>
</table>

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


0*0.55 = 0
1*0.15 = 0.15
2*0.10 = 0.20
3*0.10 = 0.30
4*0.04 = 0.16
5*0.03 = 0.15
6*0.03 = 0.18


Now add up the products: 

0+0.15+0.20+0.30+0.16+0.15+0.18 = 1.14


-------------------------------------------------------


So the expected value is <font color="red">1.14</font>