Please I want the final answer quickly

QUESTION 2 Bapco Runs a number of petrol stations around Bahrain, they want to find out the average liters of petrol used by cars. A sample of 20 cars were surveyed, on average 59.98 liters was pumped per car with a standard deviation of 1 14 Find only the upper limit of the confidence interval with 95% confidence interval (Write your answer in 2 decimal places)