The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a Normal
distribution. This distribution has a mean of 45 and a standard deviation of 9. Using the Standard Deviation
Rule, aka the Empirical Rule, what is the approximate percentage of 1-mile long roadways with potholes
numbering between 18 and 54?
Do not enter the percent symbol.
ans
%
