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Question: a company produces steel rods the lengths of the steel...

Question details

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 244.5-cm and a standard deviation of 1.4-cm. For shipment, 13 steel rods are bundled together. Find the probability that the average length of rods in a randomly selected bundle of steel rods is greater than 244.2-cm. PX > 244.2-cm) Round to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 2 decimal places are accepted.

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