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The election commission in a certain county has decided that before electronic voting machines can be placed in service, there must be strong evidence that the machines will correctly record more than 99% of the ballots cast. In testing the machines, a random sample of size 2500 of ballots recorded by the machine were checked against the paper ballots filled out by the inspectors, and it was found that 2483 had been recorded correctly. On the basis of these data, can the machines be placed in service?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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The election commission in a certain county has decided that before electronic voting machines can be placed in service, there must be strong evidence that the machines will correctly record more than 99% of the ballots cast. In testing the machines, a random sample of size 2500 of ballots recorded by the machine were checked against the paper ballots filled out by the inspectors, and it was found that 2483 had been recorded correctly. On the basis of these data, can the machines be placed in service?

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