Question 1167860
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The physical plant at the main campus of a large state university receives daily requests 
to replace florescent lightbulbs. The distribution of the number of daily requests is bell-shaped 
and has a mean of 49 and a standard deviation of 5. Using the 68-95-99.7 rule, 
what is the approximate percentage of lightbulb replacement requests numbering between 44 and 49?
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Notice that in this problem, 44 is 5 units, or exactly one standard deviation, below 
the mean of 49.


Therefore, the approximate percentage of lightbulb replacement requests numbering between 
44 and 49 is

    {{{68/2}}} = 34%.    <U>ANSWER</U>
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Solved.