Mathematics, 26.06.2020 15:01 Lingz
The price-earnings ratios of a sample of stocks have a mean value of 13.5 and a standard deviation of 2. If the ratios have a bell-shaped distribution, what can be said about the proportion of ratios that fall between 11.5 and 15.5
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The price-earnings ratios of a sample of stocks have a mean value of 13.5 and a standard deviation o...
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