Answer:
0% probability that a customer will be exactly 7.50 minutes in the record store.
Step-by-step explanation:
Uniform probability distribution:
An uniform distribution has two bounds, a and b.  
The probability of finding a value of at lower than x is:
 
The probability of finding a value between c and d is:
 
The probability of finding a value above x is:
 
The uniform distribution is a continuous distribution, which means that the probability of an exact outcome is zero.
Uniformly distributed between 3 and 12 minutes.
This means that 
What is the probability that a customer will be exactly 7.50 minutes in the record store?
Continuous distribution, so:
0% probability that a customer will be exactly 7.50 minutes in the record store.
 
        
             
        
        
        
Find a common denominator 
7/12 + 1/12 
= 7/12 + 4/12 
=11/12
        
                    
             
        
        
        
Answer:
c
Step-by-step explanation:
 
        
             
        
        
        
1
Ive got no idea but if this is the only info u have then im assuming 1