Every road has one at some point - construction zones that havemuch lower speed limits. To see if drivers obey these lower speedlimits, a police officer uses a radar gun to measure the speed (inmiles per hours, or mph) of a random sample of 10 drivers in a 25mph construction zone. Here are the data: 27; 33; 32; 21; 30; 30;29; 25; 27; 34. Is there convincing evidence that at the α=0.01significance level that the average speed of drivers in thisconstruction zone is greater than the posted speed limit?
