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use the empirical rule. the mean speed of a sampl...
Mathematics, 25.08.2019 23:10 psa180
X2.4.29
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use the empirical rule. the mean speed of a sample of vehicles along a stretch of highway is 71 miles per hour, with a standard deviation of 4 miles per hour estimate the percent
of vehicles whose speeds are between 63 miles per hour and 79 miles per hour (assume the data set has a bell-shaped distribution)
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% of vehicles travel between 63 miles per hour and 79 miles per hour.
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