5. The following are the packaging times from two shipping machines (in seconds per shipment):Machine A 42.1 41.3 42.4 43.2 41.8 41.0 41.8 42.8 42.3 42.7Machine B 42.7 43.8 42.5 43.1 44.0 43.6 43.3 43.5 41.7 44.1Assuming these data represent random samples from normal populations, examine the hypothesis of equalvariances. Clearly state all the elements of the test, including your conclusion and its justification.

The data shows the packaging times for two shipping machines.

Answered: 5. The following are the packaging…

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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5. The following are the packaging times from two shipping machines (in seconds per shipment):
Machine A 42.1 41.3 42.4 43.2 41.8 41.0 41.8 42.8 42.3 42.7
Machine B 42.7 43.8 42.5 43.1 44.0 43.6 43.3 43.5 41.7 44.1
Assuming these data represent random samples from normal populations, examine the hypothesis of equal
variances. Clearly state all the elements of the test, including your conclusion and its justification.

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Can you construct a 99% confidence interval for the difference between the true
average packaging times for the two machines, assuming equal variances. And interpret the final result (here, interval is entirely above/below 0 or not)—and say if the results of the problem above cause any concern based on this interpretation?

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