If your original equation was  , then a reflection over the x-axis means you need all the y-values to switch sign.  This means you need to multiply that function by -1.
, then a reflection over the x-axis means you need all the y-values to switch sign.  This means you need to multiply that function by -1.
      or
 or  
 
        
             
        
        
        
Answer:
valid based on the given information. If not, write invalid. ... So, the statement is invalid. Determine .....disprove a conjecture reached using inductive or deductive .
 
        
             
        
        
        
The equation is false, has no solutions.
        
                    
             
        
        
        
Answer:
a
  The 95% confidence bounds is  
b
 It was not necessary to make any assumption about the shape of the travel  time distribution 
Step-by-step explanation:
From the question we are told that 
  The sample size is  n =  30  
   The sample mean  is  
    The standard deviation is  
From the question we are told the confidence level is  95% , hence the level of significance is    
        
=>    
Generally from the normal distribution table the critical value  of   is
 is  
     
Generally the margin of error is mathematically represented as  
        
=>     
=>      
  
Generally 95% confidence bounds  is mathematically represented as  
        
=>   
=> 
This 95% confidence bounds show that there is 95% confidence that the true mean lies within this bound hence there is it was not necessary to make any assumption about the shape of the travel  time distribution