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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
2 Nov 2021

Given information

Use the following information to answer the next eleven exercises. The age of cars in the staff parking lot of a suburban college is uniformly distributed from six months (  years) to  years.
Find the probability that a randomly chosen car in the lot was less than four years old.

Step-by-step explanation

Step 1.

According to the given information, the distribution of is uniform with parameters and , in mathematical terms

 

The lowest value of is and the highest value of is  

On substitute for and for  in the probability density function.

where .

The graph of is a horizontal line segment when .

The area between for and the -axis is the area of the rectangle.

For ,

,

.

 

The area corresponds to a probability.

Therefore, the probability that is less than is , in mathematical terms

.

 

 

 

 

 

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