Answer:
0.0323 = 3.23%. Is unusual
Step-by-step explanation:
Using the normal distribution we can find z value with the mean and standard deviation as follows. x is the value we want to know its probability
z = (x - mean)/standard deviation
z = (5-8.54)/1.91
z = -1.85
Using z tables for normal distribution, for z = 1.85, we have an area under the curve of 0.9677. Since we want to know the probability for 5 minutes or less, we have to substract from
p = 1- 0.9677 
p = 0.0323
An event with a probability less than 5% is considered unusual.
 
        
             
        
        
        
Answer:
it is the surface of the 3d shape spread out like an blue print 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
See explanation.
Step-by-step explanation:

Common factor: y

 
        
             
        
        
        
We need mor information to tell what there best long jumps are