Answer:
 
    
 
    
Step-by-step explanation:
Information given
 represent the sample mean
 represent the sample mean
 population mean (variable of interest)
 population mean (variable of interest)
s=0.3 represent the sample standard deviation
n=15 represent the sample size  
Confidence interval
The confidence interval for the mean is given by the following formula:
 (1)
   (1)
The degrees of freedom are given by:
 
Since the Confidence is 0.95 or 95%, the value of  and
 and  , and the critical value wuld be
, and the critical value wuld be  
Now we have everything in order to replace into formula (1):
 
    
 
    
 
        
             
        
        
        
Answer: X= -15
Step-by-step explanation:  
Isolate the variable by dividing each side by factors that don't contain the variable.
 
        
             
        
        
        
Answer:
$13.86
Step-by-step explanation:
$5.94 / 3 = $1.98
1 slice = $1.98 
7 slices = $1.98 x 7 = $13.86
 
        
             
        
        
        
The slope for those points, as ONE (1) line is: y=-9/2<span>x.</span>
        
             
        
        
        
Step-by-step explanation:
d = z - 9 
d = 10 - 9  ----> substitute
d = 1