A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 103.5-cm and a standard deviation of 0.6-cm. For shipment, 15 steel rods are bundled together. Find...

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 103.5-cm and a standard deviation of 0.6-cm. For shipment, 15 steel rods are bundled together.


Find the probability that the average length of a randomly selected bundle of steel rods is less than 103.1-cm.

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