In a survey titled U.S. Smartphone Use in 2015, 90% of smartphone users indicated that they have had a problem with a downloaded application (app) on their cell phone not working correctly. Assume this percentage applies to all smartphone users in the United States. In a random sample of 75 smartphone users, suppose that fewer than 60 indicate that they have had a problem with an app on their cell phone not working correctly. What inference can you make about the true proportion of smartphone users who have a problem with apps not working on their cell phone?