Answer:
9
Step-by-step explanation:
if you divide 225 by 25 u get 9
 
        
             
        
        
        
Answer:
348
Step-by-step explanation:
Length-l
Width-w  
Height-h
A=2(wl+hl+hw)=2·(8·9+6·9+6·8)=348
 
        
             
        
        
        
Answer:
 
  
Now we can calculate the p value with the following probability:
 
  
Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true proportion for this case is higher than 0.5
Step-by-step explanation:
Data given and notation 
n=75 represent the random sample taken
 estimated proportion of interest
 estimated proportion of interest
 is the value that we want to test
 is the value that we want to test
 represent the significance level
 represent the significance level
Confidence=95% or 0.95
z would represent the statistic 
 represent the p value
 represent the p value 
System of hypothesis
We want to verify if the true proportion is higher than 0.5:  
Null hypothesis: 
  
Alternative hypothesis: 
  
The statistic is given by:
 (1)
 (1)  
Replacing the info given we got:
 
  
Now we can calculate the p value with the following probability:
 
  
Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true proportion for this case is higher than 0.5
 
        
             
        
        
        
Answer:  3:1
Step-by-step explanation: For every 3 wins, there is 1 loss. 60/20=3    20/20=1.