Essentials Of Statistics For Business & Economics
9th Edition
ISBN: 9780357045435
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Textbook Question
Chapter 8.5, Problem 44E
Federal Tax Return Errors. Suppose a sample of 10,001 erroneous Federal income tax returns from last year has been taken and is provided in the file FedTaxErrors. A positive value indicates the taxpayer underpaid and a negative value indicates that the taxpayer overpaid.
- a. What is the sample
mean error made on erroneous Federal income tax returns last year? - b. Using 95% confidence, what is the margin of error?
- c. Using the results from parts (a) and (b), develop the 95% confidence
interval estimate of the mean error made on erroneous Federal income tax returns last year.
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Chapter 8 Solutions
Essentials Of Statistics For Business & Economics
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