Question

A company that does manufacturing work has one facility that is automated and one that has manual functions, In order to estimate the difference in mean sme iR takes to complete a part on the two lines, the company has requested that a random sample of 12 parts at each facility be tracked from start to finish and the time required be recorded. The sample data to the right were recorded. Assuming that the populations are normally distrbuted with equal population variances, conetrct and iterpret a 99% fidence inerval estimate. x-50.6 hours S1-5.7 hours Manual 266.9 hours 25.4 hours The 90% on den einterval for the dmerence between the two pog ulation meansfor the len hoftme tukes i nako apat omsantomv,"□s rias (Round to two decimal places as needed ) What is the interpretation of this interval? Select the correct choice below and fil in the answer boxes to complete your choloe. (Type integers or decimals rounded to two decimal places as needed. Use ascending order.) OA. The iterval means that the difierence between the sample means wil be between and ours t %ofte sayin OB. The interval means that there is a(n) probablity that the diference between the population means is between and hours OC. The interval means that th %ondence the automated facity produces parts, on average, between and hours fastor than the man alfa y

Answer 1