Please provide explanations for answers :)

\fQuestion 3 1 pts If X and Y are uncorrelated, then E (X2 VY) = E (X2) . E (VY) is always true. O True O False D Question 4 1 pts Correlation coefficient can only take on values between 0 and 1. The higher the correlation coefficient, the stronger the relationship between the two random variables. O True O False D Question 5 1 pts It impossible to compute the expected value of X when we only know the joint pdf of two continuous random variables X and Y. O True O False