The observation of Judy is closer to the actual number and the difference is 4.7%
Explanation:
Taking the mean of both the assumptions of Judy and Atticus
We get = (325 + 600)/2
= 925/2
= 462.5
we see that the actual number of people who attended the fair is less than 462.5 > 452, therefore the lower number that was taken for mean will be closer.
therefore, the observation of Judy is closer to the actual number.
% error = % error of Atticus - % error of Judy
% error = (assumption - actual)/actual x 100
% error for Judy = 127/452 x 100 = 12700 / 452 = 28 %
% error for Atticus = 148/452 x 100 = 14800/452 = 32.7%
Difference = 4.7%