Answer:
The margin of error for a sample size of 250 is 6
Step-by-step explanation:
The margin of error is given as 
1/square root of the sample size
Thus, margin of error for a sapless size of 250 is
1/√250
= 1/15. 811
= 6
 
        
             
        
        
        
1. 0.2,0.4,0.54,0.61
2.0.02,0.11,0.3,0.45
3.1.02,1.24,1.33,1.7
4.1.01,1.06,1.2,1.42
5.0.87,0.9,0.98,1.23
6.0.06,0.5,1.4,1.23
7.0.003,0.031,0.033.0.03
8.0.002.0.022.0.02.0.2
        
             
        
        
        
The Y is equal to -46 hope this helps made me as brainlist
        
             
        
        
        
A^3-19 should be the answer, good luck
        
             
        
        
        
Answer: each salesperson sold 89 cars last year.
Step-by-step explanation:
The total number of sales people at the dealership shop is 13.
Last year they each sold the same number of cars. The total number of cars that they sold together last year was 1157. Therefore, the number of cars that each salesperson sold would be 
Total number of cars sold/ number of salespersons
It becomes
1157/13 = 89