PSTAT 109: Quiz 3
Winter 2014
Instructions: Please show all work in an organized fashion for full credit.
Problem 1. Let = f1; 2; 3g, and consider the family of subsets A of :
A = f;;; f1; 2g; f2; 3g; f2g; f1; 3gg:
Explain why A is not a sigma-algebra.
Problem 2. If A and B are subsets of sample space , show that
P(A B) P(A) P(A =
(
1; if X = 1;
0; if X 6= 1:
Write the probability distribution of Y in the form of a table, and interpret the meaning
of this random variable.
f. Calculate E(Y ) and V ar(Y ).
The post PSTAT 109: Quiz 3 Winter 2014 appeared first on Coursework Geeks.