Calculate the upper bound of a 95% confidence interval for the difference in sample means for the given data (round your answer to 4 decimal places):

ASSUME THE POPULATION STANDARD DEVIATIONS OF THE TWO SAMPLES ARE EQUAL

Group 1: Carpenter

Sample mean = 65000

Sample standard deviation = 7500

Sample size = 10

Group 2: Crane Operator

Sample mean = 60500

Sample standard deviation = 2500

Sample size = 14