Steel rods are manufactured with a mean length of 24 centimeter? (cm). Because of variability in...

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Steel rods are manufactured with a mean length of 24 centimeter?(cm). Because of variability in the manufacturing? process, thelengths of the rods are approximately normally distributed with astandard deviation of 0.07 cm. Complete parts ?(a) to ?(d). ?(a)What proportion of rods has a length less than 23.9 ?cm? 0.0764?(Round to four decimal places as? needed.) ?(b) Any rods that areshorter than 23.84 cm or longer than 24.16 cm are discarded. Whatproportion of rods will be? discarded? nothing ?(Round to fourdecimal places as? needed.)

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