Consider that the average length of an NFL player's career is 7.5 years with a standard deviation of 3 years, while the average length of an MLB player's career is 15.5 years with a standard deviation of 4.5 years. If a random sample of 50 NFL players and 75 MLB players is taken, what is the probability that the average for the MLB players is less than 10 years higher than that of the NFL players

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry. how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.