the following table is the joint probability mass function of two discrete random
variables X and Y
x=-1 x=0 x=1 x=2
y=-1 0.2 0.1 0.1 0.1
y=1 0.2 0.1 0.1 0.1
1.find E ( X ) and var ( X )
2. find E(Y 2)
3. Are X and Y independent of each other?.
ENGLISH 7_Q4_LESSON 2_ Employing a Variety of Strategies for Effective Interp...
the following table is the joint probability mass function o.pdf
1. the following table is the joint probability mass function of two discrete random
variables X and Y
x=-1 x=0 x=1 x=2
y=-1 0.2 0.1 0.1 0.1
y=1 0.2 0.1 0.1 0.1
1.find E ( X ) and var ( X )
2. find E(Y 2)
3. Are X and Y independent of each other?