Question

7. Let X be a random variable with E[X] = 1 and var(X) = 4. Find the following: (a) E[2X - 4], (b) E[X2], (c) E[(2X - 4)2].

Answer 1

Answer:

1 - tan²(PI/4 - Theeta)/1+tan²(PI/4 - Theeta) = Sin 2 theeta

Step-by-step explanation:

1 - tan²(PI/4 - Theeta)/1+tan²(PI/4 - Theeta) = Sin 2 theeta

1 - tan²(PI/4 - Theeta)/1+tan²(PI/4 - Theeta) = Sin 2 theeta

1 - tan²(PI/4 - Theeta)/1+tan²(PI/4 - Theeta) = Sin 2 theeta