A sample of 30 'Econ-2300' students spent an average of $69 on any music with a standard

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A sample of 30 'Econ-2300' students spent an average of $69 on any music with a standard deviation of $19. A sample of 20 'Econ-3300' students spent an average of $82 on any music with a standard deviation of $24. Obtain the 99% confidence interval for the difference between the two population means. Based on the interval, what is your conclusion?