Answer:
B. 97%
Step-by-step explanation:
20 students is -2 standard deviations away from the mean
35 is +3 standard deviations away from the mean 
100 - 2.4 = 97.6
(2.4 is amount of data we are not using) 
please refer to the standard deviation graph attached :)
 
        
             
        
        
        
Answer:
 
    
The degrees of freedom are given by:
 
  
The p value for this case would be given by:
 
  
Step-by-step explanation:
Information given
 represent the mean height for the sample
 represent the mean height for the sample  
 represent the sample standard deviation
 represent the sample standard deviation 
 sample size
 sample size  
 represent the value that we want to test
 represent the value that we want to test
t would represent the statistic 
 represent the p value for the test
 represent the p value for the test
Hypothesis to verify
We want to cehck if the true mean is lees than 25 mph, the system of hypothesis would be:  
Null hypothesis: 
  
Alternative hypothesis: 
  
The statistic would be given by:
 (1)
  (1)  
Replacing the info given we got:
 
    
The degrees of freedom are given by:
 
  
The p value for this case would be given by:
 
  
 
        
             
        
        
        
Answer:
2340
Step-by-step explanation:
Formulae for sum of interior angles is 180(n-2)
Whereby n=number of sides 

 
        
             
        
        
        
You can use the calculator or 0^2 is 0 x -3 =0 +7 (0) -4 =-4
        
             
        
        
        
Answer:
70%
Step-by-step explanation:
Volume of container A
50.27 * 17 = 854.6cm^3
Volume of container B
113.1 * 11 = 1244.1 cm^3
percent of Container B that is full after the pumping is complete 
= 

= 68.69%