Answer and Step-by-step explanation:
a) H o : there is no relation between job pressure and age 
H 1: there is a relation between job pressure and age 
b) See file attached. 
c) Test statistic: For the given categorical data, we apply the x² — test Test statistic is 2.19 
d) The test statistic value x² = 2.19 < 16.81, we accept the null hypothesis. Therefore, we conclude that there is no relationship between job pressure and age. 
 
        
             
        
        
        
Round the numbers to 70 and 30, then multiply them together to get the product of 2100
        
                    
             
        
        
        
<em>If this guy doesn't use the letter m, then the first and second characters of the password could be any of the 25 remaining letters.  So, the number of possible combinations of 2 letters is 25 times 25, or 625.  
If he doesn't use the digit 0, how many digits are left to choose from?
The first 2 characters of the password will be letters; after that there come four digits.  How many different combinations of 4 digits are there if 0 is not used?
To obtain the final result, mult. together that 625 and the number of possible combinations of digits just found above.</em>
        
             
        
        
        
I was working on it until I saw it was only 5 points. Sorry bro
        
             
        
        
        
The answer is C, because in the beginning there where 4 carbon, then when added the oxygen, there was 1 left