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Reducing scrap of 4-foot planks of hardwood is an important factor in reducing cost at a wood-flooring manufacturing company. Accordingly, engineers at Lumberworks are investigating a potential new cutting method involving lateral sawing that may reduce the scrap rate. To examine its viability, samples of 500 and 400 planks, respectively, were examined under the old and new methods. Sixty-two of the 500 planks were scrapped under the old method, whereas 36 of the 400 planks were scrapped under the new method. (You may find it useful to reference the appropriate table: z table or t table) a. Construct the 95% confidence interval for the difference between the population scrap rates between the old and new methods, respectively. Report the lower and the upper limits as proportions. (Negative value should be indicated by a minus sign. Round final answers to 2 decimal places.) Confidence interval is to b. Select the null and alternative hypotheses to test for differences in the population scrap rates between the old and new cutting methods, respectively. O Ho: P1 - P2 = 0; HA: Pi - P2 * o O Ho: P1 - P2 s 0; Ha: P1 - P2 > 0 O Họ: P1 - P2 2 0; HA: pi - P2 < 0

Reducing scrap of 4-foot planks of hardwood is an important factor in reducing cost at a wood-flooring manufacturing company. Accordingly, engineers at Lumberworks are investigating a potential new cutting method involving lateral sawing that may reduce the scrap rate. To examine its viability, samples of 500 and 400 planks, respectively, were examined under the old and new methods. Sixty-two of the 500 planks were scrapped under the old method, whereas 36 of the 400 planks were scrapped under the new method. (You may find it useful to reference the appropriate table: z table or t table) a. Construct the 95% confidence interval for the difference between the population scrap rates between the old and new methods, respectively. Report the lower and the upper limits as proportions. (Negative value should be indicated by a minus sign. Round final answers to 2 decimal places.) Confidence interval is to b. Select the null and alternative hypotheses to test for differences in the population scrap rates between the old and new cutting methods, respectively. O Ho: P1 - P2 = 0; HA: Pi - P2 * o O Ho: P1 - P2 s 0; Ha: P1 - P2 > 0 O Họ: P1 - P2 2 0; HA: pi - P2 < 0

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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Reducing scrap of 4-foot planks of hardwood is an important factor in reducing cost at a wood-flooring manufacturing company. Accordingly, engineers at Lumberworks are investigating a potential new cutting method involving lateral sawing that may reduce the scrap rate. To examine its viability, samples of 500 and 400 planks, respectively, were examined under the old and new methods. Sixty-two of the 500 planks were scrapped under the old method, whereas 36 of the 400 planks were scrapped under the new method. (You may find it useful to reference the appropriate table: z table or ttable) a. Construct the 95% confidence interval for the difference between the population scrap rates between the old and new methods, respectively. Report the lower and the upper limits as proportions. (Negative value should be indicated by a minus sign. Round final answers to 2 decimal places.) Confidence interval is to b. Select the null and alternative hypotheses to test for differences in the population scrap rates between the old and new cutting methods, respectively. O Ho: P1 - P2 = 0; HA: pi - P2 * 0 O Ho: P1 - P2 = 0; HA: Pi - P2 > 0 O Ho: P1 - P2 0; HA: Pi - P2 < 0
Transcribed Image Text:Reducing scrap of 4-foot planks of hardwood is an important factor in reducing cost at a wood-flooring manufacturing company. Accordingly, engineers at Lumberworks are investigating a potential new cutting method involving lateral sawing that may reduce the scrap rate. To examine its viability, samples of 500 and 400 planks, respectively, were examined under the old and new methods. Sixty-two of the 500 planks were scrapped under the old method, whereas 36 of the 400 planks were scrapped under the new method. (You may find it useful to reference the appropriate table: z table or ttable) a. Construct the 95% confidence interval for the difference between the population scrap rates between the old and new methods, respectively. Report the lower and the upper limits as proportions. (Negative value should be indicated by a minus sign. Round final answers to 2 decimal places.) Confidence interval is to b. Select the null and alternative hypotheses to test for differences in the population scrap rates between the old and new cutting methods, respectively. O Ho: P1 - P2 = 0; HA: pi - P2 * 0 O Ho: P1 - P2 = 0; HA: Pi - P2 > 0 O Ho: P1 - P2 0; HA: Pi - P2 < 0
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