A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 100.8-cm and a standard deviation of 1.4-cm. For shipment, 18 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is less than 99.9 cm. P(M< 99.9-cm) = Enter your answer as a number accurate to 4 decimal places.

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