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Name: The diameter of a spindle in a small motor pool is supposed to be 5 mi
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Description: The diameter of a spindle in a small motor pool is supposed to be 5 millimeters. If the spindle is too large or too small, the motor will not perform properly. The manufacturer measures the diameter in a sample of 225 motors and calculates the samp

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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The diameter of a spindle in a small motor pool is supposed to be 5 millimeters. If the spindle is too large or too small, the motor will not perform properly. The manufacturer measures the diameter in a sample of 225 motors and calculates the sample mean diameter as 4.89 millimeters. We wish to test if the mean diameter is 5 millimeters. Which of the following are the appropriate null and alternative hypotheses, letting μ denote the average diameter of all spindles?

The null hypothesis is H₀: ["", "", "", ""]

The alternative hypothesis is H_a:

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