Question 1164152
Fidelity records the number of X-Trails sold each day.  This data is used in calculating the following probability distribution of daily sales:

1) Find the cumulative distribution function (CDF)
Some help would be greatly appreciated, thanks!
<pre>
The word "cumulative" reminds you of 'accumulating', so you 'accumulate'
the P(x)'s as you go, by adding all the previous values to each one.

                x       P(x)   CDP(x)
                0       0.1    0.1 = 0.1                
                1       0.1    0.1+0.1 = 0.2
                2       0.2    0.1+0.1+0.2 = 0.4
                3       0.2    0.1+0.1+0.2+0.2 = 0.6
                4       0.3    0.1+0.1+0.2+0.2+0.3 = 0.9
                5       0.1    0.1+0.1+0.2+0.2+0.3+0.1 = 1.0

Edwin</pre>