A quantitative data set of size 150 has mean 35 and standard deviation 4. At least how
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A quantitative data set of size 150 has mean 35 and standard deviation 4. At least how many observations lie between 23 and 47?
In each of Exercises 3.120–3.131, the quantitative data set under consideration has roughly a bell-shaped distribution. Apply the empirical rule to solve each exercise.
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