SOLUTION: The maintenance department at the main campus of a large state university receives daily requests to replace fluorecent lightbulbs. The distribution of the number of daily requests

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Question 1158683: The maintenance department at the main campus of a large state university receives daily requests to replace fluorecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 49 and a standard deviation of 9. Using the 68-95-99.7 rule, what is the approximate percentage of lightbulb replacement requests numbering between 49 and 58?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
49 is the mean and 58 is 1 sd above the mean.
If 68% of all requests are between +/- 1 sd, then half or 34% are between 0 and +1 sd.
34% is the approximate percentage.