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10th Edition

Ron Larson

Publisher: Cengage Learning

ISBN: 9781305860919

Chapter 9, Problem 15RE

Textbook Problem

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**Finding Expected Value, Variance, and Standard Deviation** In Exercises 13–16, find the expected value, variance, and standard deviation for the given probability distribution.

x |
-3 |
-1 |
2 |
3 |

P(x) |
0.006 | 0.240 | 0.614 | 0.140 |

To determine

**To calculate:** The expected value, variance and standard deviation of the probability distribution:

**Given Information:**

The probability distribution:

**Formula used:**

If a discrete random variable takes the values

Variance of the random variable is defined as,

The standard deviation of the random variable is defined as,

**Calculation:**

Consider the provided probability distribution.

First use the provided probability distribution and the expected value formula

Calculus: An Applied Approach (MindTap Course List)

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