The Audit Bureau of Circulations of South Africa a nonprofit company that provides accurate and comparable circulation
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The Audit Bureau of Circulations of South Africa a nonprofit company that provides accurate and comparable circulation figures, has released newspaper-circulation statistics for the period October—December 2017. In one year, earnings growth averaged 8.2%; the standard deviation was 2.5%.
a. It can be guaranteed that 84% of these earnings growth will be in what interval?
b. Using the empirical rule, it can be estimated that approximately 68% of these earnings growth will be in what interval?
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Labindao Antoque
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Related Book For 
Statistics For Business And Economics
ISBN: 9781292315034
9th Global Edition
Authors: Paul Newbold, William Carlson, Betty Thorne
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