Question

Evaluate the cumulative distribution function, F, for the given random variable, X, at specified values; also determine the requested probabilities. Give exact answers in form of fraction. F(1) = F(2) = F(3) = (a) P(X ? 1.5) = (b) P(X ? 3) = (c) P(X > 2) = (d) P(1 < X ? 2) = f(x) = (125/31)(1/5)$^x$, x = 1,2,3

          Evaluate the cumulative distribution function, F, for the given random variable, X, at specified values; also determine the requested probabilities.
Give exact answers in form of fraction.
F(1) = 
F(2) = 
F(3) = 
(a) P(X ? 1.5) = 
(b) P(X ? 3) = 
(c) P(X > 2) = 
(d) P(1 < X ? 2) = 
f(x) = (125/31)(1/5)$^x$, x = 1,2,3

$Evaluate the cumulative distribution function, F, for the given random variable, X, at specified values; also determine the requested probabilities. Give exact answers in form of fraction. F(1) = F(2) = F(3) = (a) P(X ? 1.5) = (b) P(X ? 3) = (c) P(X > 2) = (d) P(1 < X ? 2) = f(x) = (125/31)(1/5)^x, x = 1,2,3$

Added by Cynthia T.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

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Please solve quickly. Evaluate the cumulative distribution function, F, for the given random variable, X, at specified values. Also, determine the requested probabilities: f(x) = 1/25, 3/11, 5/1, x = 1, 2, 3. Give exact answers in the form of fractions. F(= F2= F3= : (a) P(X = 1) (b) P(X = 3) (P(1 < X < 2)