Researchers investigated whether the proportion of American teenagers with some level of hearing loss was different in 2005–2006 than in 1988–1994. They collected data on random samples of American teenagers in those two time periods. Let the symbol π05-06 denote the population proportion of American teenagers with some level of hearing loss in 2005–2006 and similarly for π88-94. A 95% confidence interval for the parameter π05-06 − π88-94 turns out to be (0.0015, 0.0467). Which of the following is an appropriate conclusion to draw?
A. The sample data provide strong evidence that a higher proportion of American teenagers had hearing loss in 2005–2006 than in 1988–1994.
B. The sample data provide strong evidence that a higher proportion of American teenagers had hearing loss in 1988–1994 than in 2005–2006.
C. The sample data provide strong evidence that the proportion of American teenagers with hearing loss was the same in 1988–1994 as in 2005–2006.
D. The sample data provide little evidence to doubt that the proportion of American teenagers with hearing loss was the same in 1988–1994 as in 2005–2006.