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Name: A machine that puts corn flakes into boxes is adjusted to put an avera
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Description: A machine that puts corn flakes into boxes is adjusted to put an average of 15.7 ounces into each box, with standard deviation of 0.24 ounce. If a random sample of 13 boxes gave a sample standard deviation of 0.37 ounce, do these data support the cla

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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A machine that puts corn flakes into boxes is adjusted to put an average of 15.7 ounces into each box, with standard deviation of 0.24 ounce. If a random sample of 13 boxes gave a sample standard deviation of 0.37 ounce, do these data support the claim that the variance has increased and the machine needs to be brought back into adjustment? (Use a 0.01 level of significance.)

(ii) Find the sample test statistic. (Round your answer to two decimal places.)

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