The price-earnings (PE) ratios of a sample of stocks have a mean value of 11.25 and a standard deviation of 2.4. If the PE ratios have a bell shaped distribution, use the 68-95-99.7 Rule to estimate the percentage of PE ratios that fall between: A. 6.45 and 16.05 . Percentage \( = \) 95.44 \( \square \) \( \% \) B. 4.05 and 18.45 . Percentage \( = \) \( \square \) 99.74 \( \% \) C. 8.85 and 13.65 . Percentage \( = \) \( \square \) 68.26 \( \% \)
Added by Jessica M.
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- Mean (\(\mu\)) = 11.25 - Standard deviation (\(\sigma\)) = 2.4 Show more…
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