Number of Cell Phones
The number of cell phones sold per day at Gadgets Zone has the following probability distribution.

Number of Probability P(X)
Cellphones
Sold X
0 0.15 1 0.10
2 0.25
3 0.3
4 0.20

Find :
1.
[tex]p(x \geqslant 2)[/tex]
2.
[tex]p(x \leqslant 3)[/tex]
3.
[tex]p(1 \leqslant x \leqslant 4)[/tex]
4.
[tex]p(2) + p(4)[/tex]

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