Mindtap Business Analytics, 1 Term (6 Months) Printed Access Card For Camm/cochran/fry/ohlmann/anderson/sweeney/williams' Essentials Of Business Analytics, 2nd
2nd Edition
ISBN: 9781305861794
Author: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Publisher: Cengage Learning
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Chapter 6, Problem 20P
According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A sample of 162 companies showed that 104 beat estimates, 29 matched estimates, and 29 fell short.
- a. What is the point estimate of the proportion that fell short of estimates?
- b. Determine the margin of error and provide a 95% confidence interval for the proportion that beat estimates.
- c. How large a sample is needed if the desired margin of error is 0.05?
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Chapter 6 Solutions
Mindtap Business Analytics, 1 Term (6 Months) Printed Access Card For Camm/cochran/fry/ohlmann/anderson/sweeney/williams' Essentials Of Business Analytics, 2nd
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