Their total expenses are ...
.. $1.50 +3.00 +1.25 = $5.75
Their profit is the difference between their charge and their cost:
.. $25.00 -5.75 = $19.25
The correct choice is ...
B) $19.25
        
                    
             
        
        
        
Nlaleicodklqjdixkzkxknc uv
        
             
        
        
        
Answer:
A sample of 997 is needed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of  , and a confidence level of
, and a confidence level of  , we have the following confidence interval of proportions.
, we have the following confidence interval of proportions.
 
In which
z is the z-score that has a p-value of  .
.
The margin of error is of:

A previous study indicates that the proportion of left-handed golfers is 8%.
This means that 
98% confidence level
So  , z is the value of Z that has a p-value of
, z is the value of Z that has a p-value of  , so
, so  .
.  
How large a sample is needed in order to be 98% confident that the sample proportion will not differ from the true proportion by more than 2%?
This is n for which M = 0.02. So






Rounding up:
A sample of 997 is needed.
 
        
             
        
        
        
Answer:
He is incorrect in this statement because 38 and 40 both have factors, other than 1 x itself. Prime numbers are numbers the only have 1 factor pair, and that is 1 x itself. Factors are the numbers you multiply to get the end result, and an example is 10x4=40. The factors of 40 are 8x5, 4x10, 2x20, and of course, 1x40. The factors of 38 are 2x19, and 1x38.