Answer:
0.081,0.2621,0.645,0.919
Step-by-step explanation:
Let X be the average speed of a car driving down freeway 
Given that X is normal with mean as 70mph with a standard deviation of 5mph. 
To convert to Z score we do

a)  the probability that a randomly selected car is driving more than 77mph

b) probability that a randomly selected car is driving between 65 and 69 mph
= 
c) the probability that a randonly selected car is driving between 67 and 77mph
=
d) the probability that a randomly selected car is driving less than 77mph

 
        
             
        
        
        
H. Does not represent a function because the x value has more than one y value
        
                    
             
        
        
        
Answer:
   27
Step-by-step explanation:
17 - 8 = 9 people came
The number of presents brought is 3×9 = 27.
Jackie got 27 presents.
 
        
             
        
        
        
Answer:
97
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
what are the things at the end.
Step-by-step explanation: