E(Y) = 4, E(X) = E(Y+2), Var(X) = 5, Var(Y) = Var(2X+2)
a. What is E(2X -2Y)?
b. What is Var(2X-Y+2)?
c. What is SD(3Y-3X)?
2)
In a large community, 65% of the residents want to host an
autumn community fair.
The rest of the residents answer either disagree or no opinion
on this proposal.
A sample of 18 residents was randomly chosen and asked for their
opinions.
a) What is th probability that the residents answer either
disagree or...