Please help answer parts A through C in the attached picture.

Students Home X 5 Case Study 3 - Fall 2020.pdf X Connect X M MHE Reader *Homework Help - Q&A from Or x + C D A ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%252Fnewconnect.mheducation.com%252F#/activit... * K Error O i : Apps ye Swimsuit Sale: Sw. @ >> How To Hold Th... b New In | The hotte. Chiffon Ruched St... Clothing - Dresse.. LookBookStore -.. Women's Maxi Dr. f Clothing New Arri... Week 5 Homework - Chapter 10 Saved Help Save & Exit Submit Check my work 3 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-four of the 500 planks were scrapped under the old method, whereas 38 of the 400 planks were scrapped under the new 20 method. (You may find it useful to reference the appropriate table: z table or t table) points 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 intermediate calculations to at least 4 decimal places eBook and final answers to 2 decimal places.) Print Confidence interval is 1% to % . References b. Select the null and alternative hypotheses to test for differences in the population scrap rates between the old and new cutting methods, respectively. OHO: P1 - P2 = 0; HA: P1 - P2 * 0 OHO: P1 - P2 = 0; HA: P1 - P2 > 0 OHO: P1 - P2 2 0; HA: P1 - P2 Students Home X 5 Case Study 3 - Fall 2020.pdf X Connect X M MHE Reader *Homework Help - Q&A from Or x + C D ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%252Fnewconnect.mheducation.com%252F#/activit... * K Error O i : Apps ye Swimsuit Sale: Sw.. @ >> How To Hold Th... b New In | The hotte... Chiffon Ruched St... Clothing - Dresse... LookBookStore -.. Women's Maxi Dr.. f Clothing New Arri... Week 5 Homework - Chapter 10 Saved Help Save & Exit Submit Check my work 3 Confidence interval is % to % . 20 points eBook b. Select the null and alternative hypotheses to test for differences in the population scrap rates between the old and new cutting methods, respectively. Print References OHO: P1 - P2 = 0; HA: P1 - P2 * OHO: P1 - P2 = 0; HA: P1 - P2 > 0 OHO : P1 - P2 2 0; HA: P1 - P2