company produces steel rods. The lengths of the steel rods are normally distributed with a mean of189.6-cm and a standard deviation of 2.1-cm. For shipment, 18 steel rods are bundled together. Round allanswers to four decimal places if necessary.a. What is the distribution of X? X - N(b. What is the distribution of x? - N(c. For a single randomly selected steel rod, find the probability that the length is between 189.1-cmand 189.6-cm.d. For a bundled of 18 rods, find the probability that the average length is between 189.1-cm and189.6-cm.

According to guidelines we solve only first three subparts when given multiple subparts.

Answered: any produces steel rods. The lengths of…

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 standardized exam's scores are normally distributed. In a recent year, the mean test score was 1506 and the standard deviation was 317. The test scores of four students selected at random are 1940, 1230, 2190, and 1400. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1940 is. (Round to two decimal places as needed.)

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