Question 8.95

8.95 Where do you get your news?

A report produced by the Pew Research Center's Project for Excellence in Journalism summarized the results of a survey on how people get their news. Of the 2342 people in the survey who own a desktop or laptop, 1639 reported that they get their news from the desktop or laptop.24

  1. Identify the sample size and the count.
  2. Find the sample proportion and its standard error.
  3. Find and interpret the 95% confidence interval for the population proportion.
  4. Are the guidelines for use of the large-sample confidence interval satisfied? Explain your answer.

8.95

(a) . (b) . (c) (0.681, 0.718). With 95% confidence, the proportion of people who get their news from the desktop or laptop is between 68.1% and 71.8%. (d) Yes, we have at least 10 successes and failures in the sample.