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9.11 A machine produces metal pieces that are cylir drical in shape. A sample of pieces is taken, and th diameters are found to be 1.01, 0.97, 1.03, 1.04, 0.99 0.98, 0.99, 1.01, and 1.03 centimeters. Find a 99% con fidence interval for the mean diameter of pieces from this machine, assuming an approximately normal dis tribution. 9.20 Consider the situation of Exercise 9.11. Esti-

9.11 A machine produces metal pieces that are cylir drical in shape. A sample of pieces is taken, and th diameters are found to be 1.01, 0.97, 1.03, 1.04, 0.99 0.98, 0.99, 1.01, and 1.03 centimeters. Find a 99% con fidence interval for the mean diameter of pieces from this machine, assuming an approximately normal dis tribution. 9.20 Consider the situation of Exercise 9.11. Esti-

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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can you answer the 2nd problem with reference from the first problem

9.11 A machine produces metal pieces that are cylin- drical in shape. A sample of pieces is taken, and the diameters are found to be 1.01, 0.97, 1.03, 1.04, 0.99, 0.98, 0.99, 1.01, and 1.03 centimeters. Find a 99% con- fidence interval for the mean diameter of pieces from this machine, assuming an approximately normal dis- tribution. 9.20 Consider the situation of Exercise 9.11. Esti- mation of the mean diameter, while important, is not nearly as important as trying to pin down the loca- tion of the majority of the distribution of diameters. Find the 95% tolerance limits that contain 95% of the diameters.
Transcribed Image Text:9.11 A machine produces metal pieces that are cylin- drical in shape. A sample of pieces is taken, and the diameters are found to be 1.01, 0.97, 1.03, 1.04, 0.99, 0.98, 0.99, 1.01, and 1.03 centimeters. Find a 99% con- fidence interval for the mean diameter of pieces from this machine, assuming an approximately normal dis- tribution. 9.20 Consider the situation of Exercise 9.11. Esti- mation of the mean diameter, while important, is not nearly as important as trying to pin down the loca- tion of the majority of the distribution of diameters. Find the 95% tolerance limits that contain 95% of the diameters.
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