Answer:
2.5 minutes per quesiton
Step-by-step explanation:
75 minutes to take 30 quesitons means you divide the time equally so
75/30
 
        
             
        
        
        
<span>Standard deviation shows the distribution present in a set. Range can be used to approximate this property.
Therefore, Set b (100, 140, 150, 160, 200 10, 50, 60, 70, 110) has the largest standard deviation because it has a range of 190 (i.e. 200 - 10)</span>
        
             
        
        
        
9/12 chose Friday or Saturday. That reduces to 3/4. Which is also 75%. Hope that helps.
        
             
        
        
        
Answer:
i - 6d/0.5
that's all i remember ive done this before but my memory is wack, im sorry