The cooling system in a nuclear submarineconsists of an assembly of welded pipesthrough which a coolant is circulated.Specifications require that weld strength mustexceed 150 psi. A random sample of 20 weldsresulted in a sample mean of 153.7 psi and asample standard deviation of 11.3 psi.What is the appropriatehypothesis test to be used in this case if wewant to determine if the assembly of weldedpipes met specification? *z-testt-testchi-square testf-test

Here the sample mean and sample standard deviations are given.

Answered: The cooling system in a nuclear…

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 cooling system in a nuclear submarine consists of an assembly of welded pipes through which a coolant is circulated. Specifications require that weld strength must exceed 150 psi. A random sample of 20 welds resulted in a sample mean of 153.7 psi and a sample standard deviation of 11.3 psi. What is the appropriate alternative hypothesis for the problem? O mean 150 O mean = 150 mean # 153.5
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The cooling system in a nuclear submarine consists of an assembly of welded pipes through which a coolant is circulated. Specifications require that weld strength must exceed 150 psi. A random sample of 20 welds resulted in a sample mean of 153.7 psi and a sample standard deviation of 11.3 psi. What significance level should be used? * 0.01 0.025 0.05 0.10
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