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...
Find the particular integral of the differential equation
d2y/dx2 + 3dy/dx + 2y = e −2x
(x + 1). show that the answer is yp(x) = −e −2x ( 1/2
x2 + 2x + 2) ]