Recent study investigated tractor skidding distances along a road in a forest. the skidding distances (in meters) were measured at 20 randomly selected road sites. the data are given in the accompanying table. a logger working on the road claims that the mean skidding distance is at least 425 meters. is there sufficient evidence to refute this claim? use alphaequals0.05.

What's for breakfast? all people who ate at a certain restaurant were surveyed as to what they ordered on a particular sunday morning. 40 ate eggs 42 ate sausage 32 ate pancakes 13 ate sausage and eggs 15 ate pancakes and sausage 11 ate eggs and pancakes 6 ate all three items 3 people didn't eat any of the items how many people ate only pancakes? how many people ate at the resturant that morning? how many people didn't eat eggs?