ABC Company's internal auditor claims that 15% of the company's invoices are incorrect. To test his claim a random sample of 250 invoices is checked and 45 are found to be incorrect. Test at 1% significant level if the internal auditor's claim is supported by the sample evidence. Critical Value = 2.58

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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ABC Company's internal auditor claims that
15% of the company's invoices are incorrect.
To test his claim a random sample of 250
invoices is checked and 45 are found to be
incorrect. Test at 1% significant level if the
internal auditor's claim is supported by the
sample evidence. Critical Value = 2.58
Transcribed Image Text:ABC Company's internal auditor claims that 15% of the company's invoices are incorrect. To test his claim a random sample of 250 invoices is checked and 45 are found to be incorrect. Test at 1% significant level if the internal auditor's claim is supported by the sample evidence. Critical Value = 2.58
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