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A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 189.1-cm and a standard deviation of 1.7-cm. For shipment, 10 steel rods are bundled together. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( 189.1 1.7 b. What is the distribution of a? a - N( 189.1 0.5379 V c. For a single randomly selected steel rod, find the probability that the length is between 188.5-cm and 189.2-cm. d. For a bundled of 10 rods, find the probability that the average length is between 188.5-cm and 189.2-cm. e. For part d), is the assumption of normal necessary? No Yes Submit