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A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 171.7- cm and a standard deviation of 1.4-cm. For shipment, 9 steel rods are bundled together. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( b. What is the distribution of a? - NO c. For a single randomly selected steel rod, find the probability that the length is between 171.3-cm and 171.8-cm. d. For a bundled of 9 rods, find the probability that the average length is between 171.3-cm and 171.8-cm. e. For part d), is the assumption of normal necessary? Yes No

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 171.7- cm and a standard deviation of 1.4-cm. For shipment, 9 steel rods are bundled together. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( b. What is the distribution of a? - NO c. For a single randomly selected steel rod, find the probability that the length is between 171.3-cm and 171.8-cm. d. For a bundled of 9 rods, find the probability that the average length is between 171.3-cm and 171.8-cm. e. For part d), is the assumption of normal necessary? Yes No

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 171.7- cm and a standard deviation of 1.4-cm. For shipment, 9 steel rods are bundled together. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( b. What is the distribution of a? - NO c. For a single randomly selected steel rod, find the probability that the length is between 171.3-cm and 171.8-cm. d. For a bundled of 9 rods, find the probability that the average length is between 171.3-cm and 171.8-cm. e. For part d), is the assumption of normal necessary? Yes No Question Help: Message instructor Submit Question
Transcribed Image Text:A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 171.7- cm and a standard deviation of 1.4-cm. For shipment, 9 steel rods are bundled together. Round all answers to four decimal places if necessary. a. What is the distribution of X? X - N( b. What is the distribution of a? - NO c. For a single randomly selected steel rod, find the probability that the length is between 171.3-cm and 171.8-cm. d. For a bundled of 9 rods, find the probability that the average length is between 171.3-cm and 171.8-cm. e. For part d), is the assumption of normal necessary? Yes No Question Help: Message instructor Submit Question
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