Answer:
b)The standard normal distribution has a mean of 0 and a standard deviation of 1, while a nonstandard normal distribution has a different value for one or both of those parameters.
Step-by-step explanation:
The standard normal distribution, ( and associated tables )  N (0,1) where 0 is the mean and 1 the standard deviation, is a model representative of all other nonstandard normal distribution. Therefore we apply such concepts and tebles in the solution of problems concerning normal distribution
 
        
             
        
        
        
C. 4.45 cm. you take the circumference and divide it by pi to find the diameter
        
                    
             
        
        
        
B. I hope this help please let me know if it's correct.