About 40 swimmers maybe more 
        
             
        
        
        
        
Answer:40 pages in 8 hours
Step-by-step explanation:
5 times 8 is 40 3 times five is 15
 
        
                    
             
        
        
        
If i'm mistaken; he needs to buy 3 sheets?
 
        
             
        
        
        
<h2>
Answer with explanation:</h2>
Let p be the population proportion  of parents who had children in grades K-12 were satisfied with the quality of education the students receive. 
Given : Several years ago, 39% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. 
Set hypothesis to test :

Sample size : n= 1055
Sample proportion : 
Critical value for 95% confidence : 
Confidence interval : 

Since , Confidence interval does not contain 0.39.
It means we reject the null hypothesis.
We conclude that 95% confidence interval represents evidence that parents' attitudes toward the quality of education have changed.