8.80 Effect of the Fox News app
A survey that sampled smartphone users quarterly compared the proportions of smartphone users who visited the Fox News website before and after the introduction of a Fox News app. A report of the survey stated that 17.6% of smartphone users visited the Fox News website before the introduction of the app versus 18.5% of users after the app was introduced.20 Assume that the sample sizes were 5600 for each condition.