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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: H < 260 H:42 260 O Ho: H > 260 H:us 260 O Ho: HS 260 H:4 > 260 O Ho: H2 260 H:u < 260 O Ho: H = 260 H: u # 260 (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 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 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 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 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 $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: H < 260 H:42 260 O Ho: H > 260 H:us 260 O Ho: HS 260 H:4 > 260 O Ho: H2 260 H:u < 260 O Ho: H = 260 H: u # 260 (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 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 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 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 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.

Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 31EQ
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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: H < 260 Ha: Hz 260 Ho: u > 260 Hai us 260 Ho: Hs 260 Ha: H > 260 Ho:H2 260 H: u < 260 Ho: H = 260 H: µ # 260 (b) Comment on the conclusion when H, cannot be rejected. There is not enough evi to conclude that the new method reduces costs. Management should consider implementing the new 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 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. O There is not enough evidence to conclude that the new method reduces costs. Management should 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. There is 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.
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: H < 260 Ha: Hz 260 Ho: u > 260 Hai us 260 Ho: Hs 260 Ha: H > 260 Ho:H2 260 H: u < 260 Ho: H = 260 H: µ # 260 (b) Comment on the conclusion when H, cannot be rejected. There is not enough evi to conclude that the new method reduces costs. Management should consider implementing the new 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 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. O There is not enough evidence to conclude that the new method reduces costs. Management should 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. There is 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.
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