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Question 9 6 pts Calculate the lower bound of a 95% confidence interval for the difference in sample means for the given data (round your

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Question 9 6 pts Calculate the lower bound of a 95% confidence 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 Sample mean = 62500 Sample standard deviation = 2500 Sample size = 14

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