Author Question: We can describe graphically the shape of the distribution by a histogram, which can be symmetrical ... (Read 101 times)

nummyann · **on:** Jun 24, 2018

We can describe graphically the shape of the distribution by a histogram, which can be symmetrical or asymmetrical.

Indicate whether the statement is true or false

Question 2

If X and Y are random variables with Var(X) = 7.5, Var(Y) = 6 and Cov(X, Y) = 4, then Var(2X + 3Y) is:

A) 33
B) 37
C) 88
D) 132