A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 125.6-cm and a standard deviation of 0.8-cm. For shipment, 20 steel rods are bundled together.

Find the probability that the average length of a randomly selected bundle of steel rods is between 125.2-cm and 125.8-cm.

P(125.2-cm <M< 125.8-cm) =

Enter your answer as a number accurate to 4 decimal places. Answers obtained using exactz-scores orz-scores rounded to 3 decimal places are accepted.