Question
Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 70 mph and a standard deviation of 7
mph. What percent of cars are traveling faster than 70 mph?
mph. What percent of cars are traveling faster than 70 mph?
Answers
oobleck
You can play around with Z table stuff here:
http://davidmlane.com/hyperstat/z_table.html
http://davidmlane.com/hyperstat/z_table.html