   Chapter 8, Problem 23RE ### Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042

#### Solutions

Chapter
Section ### Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042
Textbook Problem

# Suppose a pair of dice is thrown 18 times. How many times would we expect a sum of 7 to occur?

To determine

To calculate: The number of times a sum of 7 will occur when a pair of dice is rolled 18 times.

Explanation

Given Information:

A pair of dice is rolled 18 times.

Formula Used:

The expected value of the data is,

E(x)=x(Pr(x))

Where, x is the random variable.

Calculation:

Consider a pair of dice is rolled 18 times.

When a pair of dice is rolled then the outcomes are as,

{(1,1),(1,2),(1,3),(1,4),(1,5),(1,6)(2,1),(2,2),(2,3),(2,4),(2,5),(2,6)(3,1),(3,2),(3,3),(3,4),(3,5),(3,6)(4,1),(4,2),(4,3),(4,4),(4,5),(4,6)(5

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