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Because of high production-changeover time and costs, a director of manufacturing must convince management that a proposed manufacturing method reduces costs before the new method can be implemented. The current production method operates with a mean cost of $280 per hour. A research study will measure the cost of the new method over a sample production period. (a) Develop the null and alternative hypotheses most appropriate for this study. O Ho: HS 280 H: H > 280 O Ho: H 2 280 H:u< 280 O Ho: H = 280 Ha: u + 280 Ho: 4 > 280 Ha: uS 280 Ho: H < 280 "a, μ 280 (b) Comment on the conclusion when H, cannot be rejected. O There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. O There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. O There is not enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. O There is enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. (c) Comment on the conclusion when H. can be rejected. O There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. O There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. O There is not enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. O There is enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method.

Because of high production-changeover time and costs, a director of manufacturing must convince management that a proposed manufacturing method reduces costs before the new method can be implemented. The current production method operates with a mean cost of $280 per hour. A research study will measure the cost of the new method over a sample production period. (a) Develop the null and alternative hypotheses most appropriate for this study. O Ho: HS 280 H: H > 280 O Ho: H 2 280 H:u< 280 O Ho: H = 280 Ha: u + 280 Ho: 4 > 280 Ha: uS 280 Ho: H < 280 "a, μ 280 (b) Comment on the conclusion when H, cannot be rejected. O There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. O There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. O There is not enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. O There is enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. (c) Comment on the conclusion when H. can be rejected. O There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. O There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. O There is not enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. O There is enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Because of high production-changeover time and costs, a director of manufacturing must convince management that a proposed manufacturing method reduces costs before the new method can be implemented. The current production method operates with a mean cost of $280 per hour. A research study will measure the cost of the new method over a sample production period. (a) Develop the null and alternative hypotheses most appropriate for this study. Но: и 280 Ha: u > 280 Ho: H 2 280 Ha: u < 280 Но: и 3 280 H: u + 280 a Но: и> 280 H: us 280 a Но: и < 280 На: и 2 280 (b) Comment on the conclusion when H cannot be rejected. There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is not enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. (c) Comment on the conclusion when H, can be rejected. There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is not enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method.
Transcribed Image Text:Because of high production-changeover time and costs, a director of manufacturing must convince management that a proposed manufacturing method reduces costs before the new method can be implemented. The current production method operates with a mean cost of $280 per hour. A research study will measure the cost of the new method over a sample production period. (a) Develop the null and alternative hypotheses most appropriate for this study. Но: и 280 Ha: u > 280 Ho: H 2 280 Ha: u < 280 Но: и 3 280 H: u + 280 a Но: и> 280 H: us 280 a Но: и < 280 На: и 2 280 (b) Comment on the conclusion when H cannot be rejected. There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is not enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. (c) Comment on the conclusion when H, can be rejected. There is not enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is not enough evidence to conclude that the new method reduces costs. Management should not consider implementing the new method. There is enough evidence to conclude that the new method reduces costs. Management should consider implementing the new method.
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