give 95 percent confidence interval the main question is 18.43 the other is the data needed for it needed to be done using the calculator method please follow the Plan, Solve, and Conclude steps, illustrated in Example16.216.3 for a confidence interval.4stop16.25 Pulling wood apart. How heavy a load (in pounds) isneeded to pull apart pieces of Douglas fir 4 inches longand 1.5 inches square? Here are data from students do-ing a laboratory exercise: M woOD4Step33,19031,860 32,590 26,520 33,28032,320 33,02032,030 30,460 32,70023,04030,930 32,720 33,650 32,34024,05030,17031,300 28,730 31,920(a) We are willing to regard the wood pieces preparedfor the lab session as an SRS of all similar pieces ofDouglas fir. Engineers also commonly assume thatcharacteristics of materials vary Normally. Make agraph to show the shape of the distribution for thesedata. Does it appear safe to assume that the Normal-ity condition is satisfied? Suppose that the strengthof pieces of wood like these follows a Normal distri-bution with standard deviation 3000 pounds.16 18.43 Pulling wood apart. You want to estimate the meanload needed to pull apart the pieces of wood in Exercise16.25 (page 390) to within ±600 pounds with 95%confidence. How large a sample is needed?The following exercises concern the optional material on the power ofa test.

Name: give 95 percent confidence interval the main question is 18.43 the oth
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: give 95 percent confidence interval the main question is 18.43 the other is the data needed for it needed to be done using the calculator method please follow the Plan, Solve, and Conclude steps, illustrated in Example16.216.3 for a confidence interv