Question

1. Here is some information on tomato weights W gathered separately on all of the fertilized tomato plots (F=1) and unfertilized (F=0) plots for studying the effect of fertilizer.

W	1	2	3	4
Pr(W=i|F=1)	0.2	0.3	0.3	0.2

W	1	2	3	4
Pr(W=i|F=0)	0.1	0.35	0.4	0.15

Suppose there are 20 fertilized tomato plots and 20 unfertilized tomato plots in the field,

1. (1 point) what is the expected average tomato weight of the whole field?
2. (1 point) Compare the yield of tomato plots based on mean, variance and skewness and give a brief interpretation of the results.

Answer 1