The mean salary of the 9,000 employees at Holley Inc. is m = +26,400 with a standard
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The mean salary of the 9,000 employees at Holley Inc. is m = +26,400 with a standard deviation of s = +2,420. A pollster samples 400 randomly selected employees and finds that the mean salary of the sample is $26,650. Is it likely that the pollster would get these results by chance, or does the discrepancy suggest that the pollster’s results are suspect?
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Related Book For 
Statistical Reasoning For Everyday Life
ISBN: 9780321904645
4th International Edition
Authors: Jeffrey Bennett, William L. Briggs, Mario F. Triola
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