Answer:
B. Yuri divided by n instead of n-1
Step-by-step explanation:
It was stated in the question that the dataset was sample dataset. For a sample dataset, the standard deviation is given by the formula,
σ = √ Σ (Xi - mean)²/(n - 1) where i = 1,2,3.....n
Since this is just a sample dataset and not the whole population, Yuri should have divided by n-1 instead of n.
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
22+25=47
47/2=23.5 Average shoes rented per hour
23.5*9=211.5 shoes rented per 9 hours 
211.5*3=634.5 Shoes rented per 9 hours for 3 days 
634 closest answer is B
 
        
             
        
        
        
Hello, there!
If s = 9, then 2s = 2 * 9
2 * 9 = 18
2s = 18
I hope I helped!
Let me know if you need anything else!
~ Zoe
        
             
        
        
        
Answer:
By doing process by process
 
        
             
        
        
        
You will use the ratio 4:8 to create a part to part to whole ratio.
First simplify 4:8 to 1:2, then make it 1:2:3 (Salt:Sugar:Total).
Use this to find the volume of sugar.  2 sugars for every 3 total would be equivalent to 200 cubic feet of sugar for every 300 total cubic feet.