Do Homework- Humberto Ami X C Secure https://www.mathud.com/Stud 432625281&quest

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Do Homework- Humberto Ami X C Secure https://www.mathud.com/Stud 432625281&questionid-98; Summer 2017-Math 12 Online Homework: 9.1 & 9.2 Homework Score: 0 of 1 pt 9.2.23 Save | 9of10-complete) MN Score: 84%,8.4 of 10 pts Question Help Atrade magazne rotinely checkathe divetrough service times oftast food restaurants A95% corfdence nerval rat nesuts hom examine seom men n onefast.foodchans nerv tat resultsfrom examring 586 o tomers none fast-food hans eivefro has a lower bound of 167.5 seconds and an upper bound of 170 9 seconds What does this mean? Choose the comect answer below O A. There is aprobability that the mean drive rough service time of this fast food chain is betweenscon aseconds B. One can be1Nconfident fatthe mean drivitrough senice tme of his fnthod chan is between11 woo rd r iseeras OC. The mean drive-Prough sence srne of this fastfood dain is Ilseond 1% of the time OD· One can be % corfideetthat the mean drivethrough servicn time of his fast food chain is. seconds Cick to seleat and enter your answerls) and then cick Check Answer Clear Al

Explanation / Answer

Q9)

Option B. 167.5, 170.9

Q10) Margin of error = (1.646433*0.63)Sqrt(967) = 0.033356

90% Interval

(1.94-0.033356, 1.94+0.033356)

(1.907, 1.973)

Option B is correct and answers are 1.907, 1.973

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