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Description: In a random sample of 25 samples of gasoline sold as 87 octane, the mean (R+M)/2 octane rating was 87.3 with a standard deviation of 0.59. Use this sample to test the claim that, for all gasoline sold as 87 octane, the mean (R+M)/2 octane rating is 8

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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In a random sample of 25 samples of gasoline sold as 87 octane, the mean (R+M)/2 octane rating was 87.3 with a standard deviation of 0.59. Use this sample to test the claim that, for all gasoline sold as 87 octane, the mean (R+M)/2 octane rating is 87. Use a 0.01 significance level.

Critical Values: 20.005 = 2.575,
When d.f.-24: to.005 = 2.797,
20.01 = 2.325, 20.025 = 1.96,
to.025
20.05 = 1.645,
to.0s = 1.711
20.1 = 1.282
= 1.318
to.01 = 2.492,
2.064,
to.1

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