# Distribution function

X 2 3 4
P 0.35 0.35 0.3

The data in this table do I calculate the distribution function F(x) and then probability p(2.5 < ξ < 3.25) p(2.8 < ξ) and p(3.25 > ξ)

p1 =  0.35
p2 =  0.3
p3 =  0.65

### Step-by-step explanation:

${p}_{2}=0.3=\frac{3}{10}$
${p}_{3}=0.3+0.35=\frac{13}{20}=0.65$

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