Question 9.38

9.38 Trends in broadband market.

The Pew Internet and American Life Project collects data about the impact of the Internet on various aspects of American life.16 One set of surveys has tracked the use of broadband in homes over a period of several years.17 Here are some data on the percent of homes that access the Internet using broadband:

Date of survey 2001 2005 2009 2013
Homes with broadband 6% 33% 63% 70%

Assume a sample size of 2250 for each survey.

  1. Display the data in a two-way table of counts.
  2. Test the null hypothesis that the proportion of homes that access the Internet using broadband has not changed over this period of time. Report your test statistic with degrees of freedom and the P-value. What do you conclude?