math for liberal arts 1

Question

The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 65 and a standard deviation of 7. Using the Empirical Rule rule, what is the approximate percentage of lightbulb replacement requests numbering between 51 and 65?

Answer 1

what is the approximate percentage of lightbulb replacement requests numbering between 51 and 65? 0.4772499385