A large North Texas company bought a new business unit to deliver arcels between its 15 North Texas facilities. These parcels included nail, small manufactured parts, internal documents, packages, etc. he company wishes to monitor the accuracy of deliveries (i.e., etting the right package to the right location), but keeping records of every delivery was judged to be too expensive. Management herefore decided to randomly sample parcel deliveries (usually by uditors at each site's mail drop) in order to estimate true delivery ccuracy. The resulting random sample of 8717 total parcels found hat only 69 were delivered in error (i.e., not accurately). i). What is the sample proportion of parcels that are delivered ccurately? Show your work. ii). Calculate a 95% confidence interval for the true population roportion of parcels that are delivered accurately. Show your work. iii). Write a two-sentence conclusion for the results of the
A large North Texas company bought a new business unit to deliver arcels between its 15 North Texas facilities. These parcels included nail, small manufactured parts, internal documents, packages, etc. he company wishes to monitor the accuracy of deliveries (i.e., etting the right package to the right location), but keeping records of every delivery was judged to be too expensive. Management herefore decided to randomly sample parcel deliveries (usually by uditors at each site's mail drop) in order to estimate true delivery ccuracy. The resulting random sample of 8717 total parcels found hat only 69 were delivered in error (i.e., not accurately). i). What is the sample proportion of parcels that are delivered ccurately? Show your work. ii). Calculate a 95% confidence interval for the true population roportion of parcels that are delivered accurately. Show your work. iii). Write a two-sentence conclusion for the results of the
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 6E
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