The probability distribution of X is given as: f(x) = { 0.4; x = 1 (x-1)/4; 1 < x < 2 (3-x)/4; 2 ≤ x < 3 0.6; x = 3 0; elsewhere] (i) Find the mean of X (ii) Find the variance of X

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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The probability distribution of X is given as:

f(x) = { 0.4; x = 1

(x-1)/4; 1 < x < 2

(3-x)/4; 2 ≤ x < 3

0.6; x = 3

0; elsewhere]

(i) Find the mean of X (ii) Find the variance of X

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