Question 4 A company produces steel rods. The lengths of the steel rods are normally distributed...
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Question 4 A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 168.1-cm and a standard deviation of 2-cm. For shipment, 36 steel rods are bundled together. Round all answers to four decimal places if necessary. a. What is the distribution of X? X-NO b. What is the distribution of ? - N( 149,000 c. For a single randomly selected steel rod, find the probability that the length is between 167.6-cm and 167.8-cm. d. For a bundled of 36 rods, find the probability that the average length is between 167.6-cm and 167.8-cm. e. For part d), is the assumption of normal necessary? Yes No A instructor Question 4 A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 168.1-cm and a standard deviation of 2-cm. For shipment, 36 steel rods are bundled together. Round all answers to four decimal places if necessary. a. What is the distribution of X? X-NO b. What is the distribution of ? - N( 149,000 c. For a single randomly selected steel rod, find the probability that the length is between 167.6-cm and 167.8-cm. d. For a bundled of 36 rods, find the probability that the average length is between 167.6-cm and 167.8-cm. e. For part d), is the assumption of normal necessary? Yes No A instructor
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Related Book For
Intermediate Accounting
ISBN: 978-0324300987
10th Edition
Authors: Loren A Nikolai, D. Bazley and Jefferson P. Jones
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