During one season of racing at the talladega superspeedway, the mean speed of the cars racing there was found to be 158.9 mph with a standard deviation of 10.0 mph. what speed represents the 33rd percentile for speeds of race cars at talladega? assume that the racing speeds are normally distributed.

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line