Answer:
there are 25 students in the class and 15 who wear glasses.
 
        
                    
             
        
        
        
Jack is 10 blocks away from the school
        
             
        
        
        
The numbers can be 5.25 and 26.25
        
             
        
        
        
Answer:
Step-by-step explanation:
 d = 7%2F2
 -2, -2+7%2F2, -2+2%287%2F2%29, -2+3%287%2F2%29, 12
 -2, -4%2F2+7%2F2, -4%2F2+14%2F2, --4%2F2+21%2F2, 12
 -2, 3%2F2, 10%2F2, 17%2F2, 12
  
 -2, 3%2F2, 5, 17%2F2, 12
 
        
             
        
        
        
Answer:
 
And if we solve for a we got
 
The 95th percentile of the hip breadth of adult men is 16.2 inches.
Step-by-step explanation:
Let X the random variable that represent the hips breadths of a population, and for this case we know the distribution for X is given by:
 
  
Where  and
 and  
For this part we want to find a value a, such that we satisfy this condition:
 (a)
   (a)
 (b)
   (b)
We can find a quantile in the normal standard distribution who accumulates 0.95 of the area on the left and 0.05 of the area on the right it's z=1.64
Using this value we can set up the following equation:
 
  
 
And we have:
 
And if we solve for a we got
 
The 95th percentile of the hip breadth of adult men is 16.2 inches.