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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 $260 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: H2 260 H: u < 260 O Ho: 4 > 260 Ha:uS 260 O Ho: HS 260 H3:H > 260 Ο "μ= 260 Ha: H # 260 O Ho: H < 260 Hai H2 260 (b) Comment on the conclusion when Ho cannot be rejected. 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. 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 consider implementing the new method. (c) Comment on the conclusion when Ho can be rejected. 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. 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 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 $260 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: H2 260 H: u < 260 O Ho: 4 > 260 Ha:uS 260 O Ho: HS 260 H3:H > 260 Ο "μ= 260 Ha: H # 260 O Ho: H < 260 Hai H2 260 (b) Comment on the conclusion when Ho cannot be rejected. 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. 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 consider implementing the new method. (c) Comment on the conclusion when Ho can be rejected. 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. 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 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
Problem 1P
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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 $260 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. Ho: µ 2 260 Ha: µ < 260 Ho: H > 260 Ha: us 260 Ho: Hs 260 Ha: µ > 260 Ho: µ = 260 Ha: u + 260 Ho: H < 260 H: µ 2 260 (b) Comment on the conclusion when H, cannot be rejected. O There is not enough evi to conclude that the new metho reduces costs. Management should not consider implementing the new O There is 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 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 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. 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 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 $260 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. Ho: µ 2 260 Ha: µ < 260 Ho: H > 260 Ha: us 260 Ho: Hs 260 Ha: µ > 260 Ho: µ = 260 Ha: u + 260 Ho: H < 260 H: µ 2 260 (b) Comment on the conclusion when H, cannot be rejected. O There is not enough evi to conclude that the new metho reduces costs. Management should not consider implementing the new O There is 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 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 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. 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 consider implementing the new method.
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