Chapter 10, Problem 46SE

News Access Via Computer. The American Press Institute reports that almost 70% of all American adults use a computer to gain access to news. Based on generational differences, you suspect that the proportion of American adults under 30 years old who use a computer to gain access to news exceeds the proportion of Americans 30 years and older who use a computer to gain access to news. Data in the file ComputerNews represent responses to the question, “Do you use a computer to gain access to news?” given by random samples of American adults under 30 years old and Americans over 30 years old.

1. a. Estimate the proportion of American adults under 30 years old who use a computer to gain access to news and the proportion of Americans over 30 years old who use a computer to gain access to news.
2. b. Provide a 95% confidence interval for the difference in proportions.
3. c. On the basis of your findings, does it appear the proportion of American adults under 30 years old who use a computer to gain access to news exceeds the proportion of Americans over 30 years old who use a computer to gain access to news?