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AMUEEE Cumulative Distribution Function — practice questions

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The **cumulative distribution function (c.d.f.)** $F(x)$ of a discrete random variable is:The c.d.f. $F(x)$ of the p.d.f. $f(x) = 3x^2$ for $0 < x < 1$ is:For the c.d.f. $F(x) = 3x - 2x^3$ (from p.d.f. $f(x) = 3(1 - 2x^2)$ on $[0, 1]$), $F(0.5)$ equals: