Research Question: On average do the number of people visiting Universal Studios and Disney World differ?

It is known that Universal Studios and Disney World are related and likely have population standard deviations equal to each other.

Universal Studios (Group 1):

Average number of people per day = 535.59

sample Standard deviation = 36

sample size of Group 1 = 25

Disney World (Group 2):

Average number of people per day = 520.26

Sample Standard deviation = 25

sample size of Group 2 = 57

Calculate the upper bound for a 95%CI (round to 4 decimal places)