Calculate the upper bound of a 95% interval for the difference in sample means for the given data (round your answer to 4 decimal places): DO NOT ASSUME THE POPULATION STANDARD DEVIATIONS OF THE TWO SAMPLES ARE EQUAL Group 1: Carpenter Sample mean = 60000 Sample standard deviation = 5500 Sample size = 10 Group 2: Crane Operator een Sho 02...4.40 Sample mean = 62500 Sample standard deviation = 2500 Sample size = 14 een Shot 02...2.13 P een Shot 02...2.23 PM