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)
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)
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