A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 232.3-cm and a standard deviation of 0.6-cm. For shipment, 13 steel rods are bundled together. Round all answers to four decimal places if necessary. For a bundled of 13 rods, find the probability that the average length is between 232.4-cm and 232.5-cm.  For part d), is the assumption of normal necessary? Yes No

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A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 232.3-cm and a standard deviation of 0.6-cm. For shipment, 13 steel rods are bundled together. Round all answers to four decimal places if necessary.

  1. For a bundled of 13 rods, find the probability that the average length is between 232.4-cm and 232.5-cm. 
  2. For part d), is the assumption of normal necessary? Yes No

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