Problems 15-16. compute the mean and standard deviation of the random variable with the given
discrete probability distribution.
15.
х
u-x
(u-x)
(u - x)? *p(x)
[1
2
15
7
p(x)
0.42
0.18
0.34
0.06
t
mean =
standard deviation =

Consider the following estimates from the early 2010s of shares of income to each group. country poorest 40% next 30% richest 30% bolivia 10 25 65 chile 10 20 70 uruguay 20 30 50 1.) using the 4-point curved line drawing tool, plot the lorenz curve for bolivia. properly label your curve. 2.) using the 4-point curved line drawing tool, plot the lorenz curve for uruguay. properly label your curve.