The results of a recent poll on the preference of teenagers regarding the types of music they listen to are shown below.
Music Type
Teenagers Surveyed
Teenagers FavoringThis Type
Pop
800
384
Rap
900
450
?
The 95% confidence interval for the difference between the two population proportions is
A. .5 to .52.
B. .48 to .5.
C. .028 to .068.
D. -.068 to .028.
Answer: D
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