The range is 17 because the highest score (95) minus the lowest score (78) is 17
        
             
        
        
        
Answer:
The speed rate is 100 feet per 25 seconds, or 20 feet every 5 seconds, (100 / 5 = 20) 
Every minute is 60 seconds long, this means that to find out how fast she would roll in one minute we just need to do 60 / 5 = 12 and then do 12 x 20
12 x 20
10 x 20 = 200 feet per second
2 x 20 = 40 feet per second
200 + 40 = 240 feet per second
Happie would roll 240 feet in a minute at the speed of 100 feet per 25 seconds
Hope this helps!
 
        
                    
             
        
        
        
Answer:
1679616
Step-by-step explanation:
36^4
 
        
                    
             
        
        
        
24x+8x= 32x
32x-11x=21x
21x=-7-14
-7-14=-21
21x=-21 
-1
        
                    
             
        
        
        
Answer:
The 99% confidence interval is    
  
Step-by-step explanation:
From the question we are told that 
      The sample size is  n  = 100 
      The sample mean is  
       The population standard deviation is   
  
From the question we are told the confidence level is  99% , hence the level of significance is    
        
=>    
Generally from the normal distribution table the critical value  of   is
 is  
     
Generally the margin of error is mathematically represented as  
       
        
=>     
Generally 95% confidence interval is mathematically represented as  
        
=>      
    
=>     