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23 Oct 2021

Given information

Roll two fair dice. Each die has six faces.

is the event that either a three or four is rolled first, followed by an even number.

is the event that the sum of the two rolls is at most seven.

Step-by-step explanation

Step 1.

is the probability of event occurring, given that event occurs.

In the given situation when:

 is the event that either a three or four is rolled first, followed by an even number.

 is the event that the sum of the two rolls is at most seven.

is the probability that either a three or four is rolled first, followed by an even number, given that the sum of the two rolls is at most seven.

Consider the sample space as follows:

,  

.

The set of event occurring is:

   

The set of event occurring is:

 

Therefore,

   

Consider the formula:

, then

.

Hence, 

  

 

 

 

 

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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

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