In a Time/CNN poll of adult Americans, 73% said “there should be more government spending on educational and recreational facilities for teenagers to reduce teenage voilence”. Among a recent sample of 400 adult Americans, 77% hold this view. Test at the significance level 0.01 if the current percentage of adult Americans who hold this view is higher than 73%.

Note: Please explain in details because I’m not that best in math…Thank you!