Answer:
The  value is   
 
Step-by-step explanation:
From the question we are told that 
      The null hypothesis is  
      The level of significance is  
From the z table  the critical value of   considering the two tails of the normal  curve( This is because this a two tailed test ) is
 considering the two tails of the normal  curve( This is because this a two tailed test ) is 
        
Hence the critical value is  
         
 
          
 
        
             
        
        
        
Answer:
10 < x < 20
Step-by-step explanation:
the sum of any two sides of a triangle has to be greater than the 3rd side, so the maximum value of the third side in this instance is 19.9999999 because 10 + 10 = 20
 
        
             
        
        
        
$7680:100%=$x:120.45%, 100x=7680*120.45, x=(7680*120.45)/100, x=$9250.56
Cost of the pool with interest rate is $9250.56.
3yr*12mo=36mo
$9250.56/36mo=256.96$/mo
<span> Charlotte's monthly payment will be $256.96.</span>