Question 8 A company produces steel rods. The lengths of the steel rods are normally distributed with a mean
of 219.2-cm and a standard deviation of 0.9-cm. For shipment, 23 steel rods are bundled together.
Find the probability that the average length of a randomly selected bundle of steel rods is greater
than 219.8 cm
PM > 219.8-cm) =
Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact z-scores
or scores rounded to 3 decimal places are accepted.
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