13. The daily tonnage of garbage handled by the EnviroSafe Landfill Co. is represented as the outcome of a random variable having some triangular distribution, as X ~ fIx;

a) = [(.5 - .25a) + .25xl1Ia-2,al(x)

+ [(.5 + .25a) - .25xl1Ia,a+21(xl 293 The distribution is represented graphically as follows:

f(x;a)

~--------~~--~a- ---~~----------x Enviro-Safe is in the process of analyzing whether or not it needs to expand its facilities. It wants an estimate of the expected daily tonnage of garbage that it handles. It has collected 4 years of daily observations on tonnage handled (n = 1,460 observations) and provides you with the following summary statistic:

11 LXi = 29,200.

i~1 You may treat the observations as outcomes of iid random variables.