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History, 15.09.2019 08:10 crimhill

The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulbs. the distribution of the number of daily requests is bell-shaped and has a mean of 50 and a standard deviation of 7. using the empirical rule, what is the approximate percentage of lightbulb replacement requests numbering between 36 and 50?

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