# Find the variance of the given random variable. A child has lost her ring somewhere along a 20-foot line in a narrow strip of grass. Let X denote the location (lengthwise) along the grass where it was dropped, so fX(x) = 1/20 for 0 x 20, and fX(x) = 0 otherwise.

Find the variance of the given random variable.

A child has lost her ring somewhere along a 20-foot line in a narrow strip of grass. Let X denote the location (lengthwise) along the grass where it was dropped, so

fX(x) = 1/20

for 0 ≤ x ≤ 20,

and fX(x) = 0 otherwise.

A child has lost her ring somewhere along a 20-foot line in a narrow strip of grass. Let X denote the location (lengthwise) along the grass where it was dropped, so

fX(x) = 1/20

for 0 ≤ x ≤ 20,

and fX(x) = 0 otherwise.

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**Related Book For**

## Introduction to Probability

1st edition

**Authors:** Mark Daniel Ward, Ellen Gundlach

**ISBN:** 978-0716771098