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22. Are teenagers going deaf? In a study of 3000 randomly selected teenagers in 1990, 450 showed some hearing loss. In a similar study of

22. Are teenagers going deaf? In a study of 3000 randomly selected teenagers in 1990, 450 showed some hearing loss. In a similar study of 1800 teenagers reported in 2010, 351 showed some hearing loss. a. Do these data give convincing evidence that the proportion of all teens with hearing loss has increased at the a - 0.01 significance level

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