A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 172.6-cm and a standard deviation of 1.2-cm. For shipment, 26 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is greater than 171.9-cm. P(M > 171.9-cm) = Enter your answer as a number accurate to 4 decimal places.