A machine that puts corn flakes into boxes is adjusted to put an average of 15.6 ounces into each box, with standard deviation of 0.23 ounce. If a random sample of 17 boxes gave a sample standard deviation of 0.38 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.) A) State the null and alternate hypotheses. B) Find the sample test statistic. (Round your answer to two decimal places.) C) Find the sample test statistic. (Round your answer to two decimal places.) reject or fail to reject null hypothesis?
A machine that puts corn flakes into boxes is adjusted to put an average of 15.6 ounces into each box, with standard deviation of 0.23 ounce. If a random sample of 17 boxes gave a sample standard deviation of 0.38 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.) A) State the null and alternate hypotheses. B) Find the sample test statistic. (Round your answer to two decimal places.) C) Find the sample test statistic. (Round your answer to two decimal places.) reject or fail to reject null hypothesis?
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 15.6 ounces into each box, with standard deviation of 0.23 ounce. If a random sample of 17 boxes gave a sample standard deviation of 0.38 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.)
A) State the null and alternate hypotheses.
B) Find the sample test statistic. (Round your answer to two decimal places.)
C) Find the sample test statistic. (Round your answer to two decimal places.)
reject or fail to reject null hypothesis?
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