According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A...
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According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A sample of 162 companies showed that 114 beat estimates, 29 matched estimates, and 19 fell short. (a) What is the point estimate of the proportion that fell short of estimates? If required, round your answer to four decimal places. Pahart (b) Determine the margin of error and provide a 956 confidence interval for the proportion that beat estimates. If required, round your answers to four decimal places. ME - Confidence interva: to (c) How large a sample is needed if the desired margin of error is 0.05? if required, round your answer to the next integer. According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A sample of 162 companies showed that 114 beat estimates, 29 matched estimates, and 19 fell short. (a) What is the point estimate of the proportion that fell short of estimates? If required, round your answer to four decimal places. Pahart (b) Determine the margin of error and provide a 956 confidence interval for the proportion that beat estimates. If required, round your answers to four decimal places. ME - Confidence interva: to (c) How large a sample is needed if the desired margin of error is 0.05? if required, round your answer to the next integer.
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Modern Business Statistics with Microsoft Excel
ISBN: 978-1337115186
6th edition
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
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