(b)A company produces cylindrical metal rods. The diameters of rods have a normaldistribution with mean ucm and variance o' cm?. A random sample of 100 rods istaken and the diameter x, in cm, of each rod is measured. The results are summarisedas Ex=52.1 and x = 27.303.(1)Calculate the mean and variance of the population of the diameters of therods(iii) Detemine a 95% confidence interval for the mean diameter of the rods.(iv) Investigate, at the 1% significance level, whether the mean diameter of therods is 0.512 cm.

Data given n=100, ∑x=52.1, ∑x2=27.303

Answered: (b) A company produces cylindrical…

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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