Answer: 0.05
Step-by-step explanation:
Given : Interval for uniform distribution : [46.0 minutes, 56.0 minutes]
The probability density function will be :-

The probability that a given class period runs between 50.75 and 51.25 minutes is given by :-

Hence, the probability that a given class period runs between 50.75 and 51.25 minutes = 0.05
 
        
             
        
        
        
Answer:
 and
 and 
Step-by-step explanation:
At=As+Ar; A=b.h and  , then:  At=(x+120)x so
, then:  At=(x+120)x so 
(x+120)x=4500,  Applying cuadratic equation formula:
 Applying cuadratic equation formula:
 
        
                    
             
        
        
        
N * 0.4 =8n*0.4:0.4=2
8 2*0.4:0.4= 32.8:0.4=82