helppppppppppppp

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 41 and a standard deviation of 4. Using the Empirical Rule rule, what is the approximate percentage of lightbulb replacement requests numbering between 41 and 53?

Answer 1

by the empirical rule 99.7% lie within 3 standard deviations from the mean

that means 99.7/2 = 49.85% above the mean

between 41 and 53 are 49.85% of the data or daily requests

(53-41)/4 = 12/4 =3 sd's

when you posted 4 sd's that looks like a typo

if somehow you meant 4 sd's that's about 50% above the mean

especially when rounded off to nearest integer