A traffic helicopter flew directly from point A to Point B in 8 minutes. Did the helicopter travel slower or faster than the driver? The driver: A driver is traveling at a constant speed on Interstate 90 outside Chicago. If she traveled from point a to point b in 8 minutes, did she obey the speed limit of 55 mph

Thanks for anyone's help! This is to help my daughter with her math.

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.