The Pew Research Center did a survey of 2253 adults and discovered that 63% of them had
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The Pew Research Center did a survey of 2253 adults and discovered that 63% of them had broadband Internet connections in their homes. The survey report noted that this figure represented a "significant jump" from the similar figure of 54% from two years earlier. One way to define "significant jump" is to show that the earlier number does not lie in the 95% confidence interval. Was the increase significant by this definition?
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Introduction To Mathematical Statistics And Its Applications
ISBN: 9780321693945
5th Edition
Authors: Richard J. Larsen, Morris L. Marx
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