Answer:
(-3.07, 11.07)
Step-by-step explanation:
Given that a sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To test this, the writer used eighteen adult male volunteers. These volunteers were randomly divided into two groups of nine subjects each. 
Group   Group One     Group Two  
Mean	300.00	296.00
SD	8.00	6.00
SEM	2.67	2.00
N	9    	9    
The mean of Group One minus Group Two equals 4.00
  
standard error of difference = 3.333
    df = 16
t = 1.2000
Margin of error = 3.3333* t critical = 3.3333*2.121
  95% confidence interval of this difference: From -3.07 to 11.07
 
        
             
        
        
        
Answer:
5,6,-7
Step-by-step explanation:
yuh jsjsksmsksksks
 
        
                    
             
        
        
        
Answer: The number of different passwords can be formed = 1,000,000
Step-by-step explanation:
In general total digits = 10  [ from 0 to 9]
If a password contains 6 digits, then by fundamental principal of counting, the total number of different passwords =
Hence, the number of different passwords can be formed = 1,000,000