Terri Vogel, an amateur motorcycle racer, averages 129.71 seconds per 2.5 mile lap (in a seven-lap race) with a standard deviation of 2.28 seconds. The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps.
Part (a) In words, define the random variable X.
O the distance (in miles) of each lap
O the distance (in miles) of each race
O the time (in seconds) per race
O the time in seconds) per lap