Homework Help is Here – Start Your Trial Now!
Math
Statistics
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 Investigatıng a potentlal new cutting method Involving lateral sawing that may reduce the scrap rate. To examine its vlability, samples of 600 and 500 planks, respectively, were examined under the old and new methods. Sıxty-two of the 600 planks were scrapped under the old method, whereas 34 of the 500 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 90% confidence interval for the difference between the population scrap rates between the old and new methods, respectively. (Negative values should be Indicated by a minus sign. Round Intermedlate calculations to at least 4 decimal places and 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. Hg: P1 - P2 = 0; HA: P1 - P2 0 O Ho: P1 - P2 s 0; HA: P1 - P2 > 0 O Hạ: P1 - P2 2 0; HA: P1 - P2 < 0 c. Using the part a results, can we conclude at the 10% significance level that the scrap rate of the new method is different than the old method? We are different between the old and new methods. HO. At the 10% significance level, we conclude the proportions

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 Investigatıng a potentlal new cutting method Involving lateral sawing that may reduce the scrap rate. To examine its vlability, samples of 600 and 500 planks, respectively, were examined under the old and new methods. Sıxty-two of the 600 planks were scrapped under the old method, whereas 34 of the 500 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 90% confidence interval for the difference between the population scrap rates between the old and new methods, respectively. (Negative values should be Indicated by a minus sign. Round Intermedlate calculations to at least 4 decimal places and 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. Hg: P1 - P2 = 0; HA: P1 - P2 0 O Ho: P1 - P2 s 0; HA: P1 - P2 > 0 O Hạ: P1 - P2 2 0; HA: P1 - P2 < 0 c. Using the part a results, can we conclude at the 10% significance level that the scrap rate of the new method is different than the old method? We are different between the old and new methods. HO. At the 10% significance level, we conclude the proportions

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
See similar textbooks
icon
Related questions
Question
100%
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 600 and 500 planks, respectively, were examined under the old and new methods. Sıxty-two of the 600 planks were scrapped under the old method, whereas 34 of the 500 planks were scrapped under the new method. (You may find It useful to reference the approprlate table: z table or t table) a. Construct the 90% confidence Interval for the difference between the population scrap rates between the old and new methods, respectively. (Negative values should be Indicated by a minus sign. Round Intermedlate calculatlons to at least 4 decimal places and 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 Hg: p1 - P2 = 0; HA: P1 - p2 = 0 O Hg: P1 - p2 s 0; HA: P1 - P2 > 0 O Hg: p1 - P2 2 0; HA: P1 - P2 < 0 c. Using the part a results, can we conclude at the 10% significance level that the scrap rate of the new method is different than the old method? We H0. At the 10% significance level, we conclude the proportions are different between the old and new methods.
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 600 and 500 planks, respectively, were examined under the old and new methods. Sıxty-two of the 600 planks were scrapped under the old method, whereas 34 of the 500 planks were scrapped under the new method. (You may find It useful to reference the approprlate table: z table or t table) a. Construct the 90% confidence Interval for the difference between the population scrap rates between the old and new methods, respectively. (Negative values should be Indicated by a minus sign. Round Intermedlate calculatlons to at least 4 decimal places and 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 Hg: p1 - P2 = 0; HA: P1 - p2 = 0 O Hg: P1 - p2 s 0; HA: P1 - P2 > 0 O Hg: p1 - P2 2 0; HA: P1 - P2 < 0 c. Using the part a results, can we conclude at the 10% significance level that the scrap rate of the new method is different than the old method? We H0. At the 10% significance level, we conclude the proportions are different between the old and new methods.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Point Estimation, Limit Theorems, Approximations, and Bounds
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS