Answer:
sample mean (x with the bar on top) =24
Step-by-step explanation:
Take the mean of all the number of employees but divide by the number of days size: (25+10+16...)/12=25
population mean (mu) =11.52
The same goes for the other one but divide by the population which is 25
 
        
             
        
        
        
Approximately 0.3246 (rounded to the nearest ten thousandth). Find the square root of 40, then subtract 6.
        
                    
             
        
        
        
Answer:
-10x² - 7x + 7
Step-by-step explanation:
Subtract:
- -5x² - 8x - 1 - (5x² - x - 8)
- -5x² - 5x² - 8x + x - 1 + 8
- -10x² - 7x + 7
Remember: subtracting a negative number is adding that number
-Chetan K
 
        
                    
             
        
        
        
Answer: The answer is 4 and 32.
Step-by-step explanation: Let "A", "B" and "C" represents the set of students who were taking Arabic, Bulgarian and Chinese respectively.
The, according to the given information, we have

Let 'p' represents the number of students who take all the three languages, then

Also,

From here, we get after subtracting equation(c) from (b) that
 
 
Therefore,
 and from equation (a), we find
 and from equation (a), we find

Thus, 
 and
 and

Thus, the number of students who take all the three languages is 4 and the number of students who take none of the languages is 100-68 = 32.
 
 
        
             
        
        
        
Answer:
- 2 - 4n - 8n²  
Step-by-step explanation:
thats ur anser