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Steel rods are manufactured with a mean length of 22 centimeter(cm). Because of variability in the manufacturingprocess, the lengths of the rods are approximately normally

Steel rods are manufactured with a mean length of 22 centimeter(cm). Because of variability in the manufacturingprocess, the lengths of the rods are approximately normally distributed with a standard deviation of 0.05 cm. Complete parts (a) to (d).

a. 0.0028

(b) Any rods that are shorter than 21.89 cm or longer than 22.11 cm are discarded. What proportion of rods will bediscarded?

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