Answer Happy

Please help to solve this probability problem. The numbers on
the line (excluding the question numbers like 1. 2. 3.) are the
final correct answers (for this question, the correct answers are
1.00, 0.67 and 0.67 respectively). Please give detailed
steps to explain how to get the final correct answer. Thanks!
3. Fill in the blanks A point (X,Y) is chosen randomly (uniformly) from the square (-1,1]*[-1, 1) in the plane R2. E[|X|+|Y|] = 1. 1.00 (2 decimal places) E[X²+Y?] 2. 0.67 (2 decimal places) E{max(|X, YD)]= 3. 0.67 (2 decimal places) =