The speeds (in miles per hour) of motor vehicles on a certain stretch of Route 3A as clocked at a certain place along the highway are normally distributed with a mean of67.1mph and a standard deviation of5.34mph. What is the probability that a motor vehicle selected at random is traveling at the following speeds? (Round your answers to four decimal places.)

(a) more than69mph

(b) less than62mph

(c) between69and73mph