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Mathematics, 15.04.2020 23:41 gracie0818

The price-earnings (PE) ratios of a sample of stocks have a mean value of 13.5 and a standard deviation of 1.4. If the PE ratios have a normal distribution, use the Empirical Rule (also called the 68-95-99.7 Rule) to estimate the percentage of PE ratios that fall between:

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