Both students with the rural and urban background in a college music appreciation course are given an aptitude test on the first day of class. Make any necessary assumptions and construct a 99%...

Both students with the rural and urban background in a college music appreciation course are given an aptitude test on the first day of class. Make any necessary assumptions and construct a 99% confidence interval for the difference in music attitude if the summary of the experiment is as follows:

type      sample size             average apitude score             standard deviation

Rural              9                                  71.4                                            4.1

Urban              14                                   86.2                                         3.8

A. (-18.41, -11.19)

B. ( -19.54, -10.06)

C. ( -18.28, -11.32)

D. (-19.19, -10.41)