11. Suppose X and Y are random variables, c and d are constants. What is E(CX - DY)? OA. E(X) - E(Y) OB. c-d OC. CE(X) + dE(Y) OD. CE(X) - dE(Y)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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11. Suppose X and Y are random variables, c and d are constants. What is
E(CX - DY)?
A. E(X) - E(Y)
OB. c-d
B. c-d
C. CE(X) + dE(Y)
O D. CE(X) - dE(Y)
12. The mean and variance of a Standard Normal random variable are *
O O O O
(0,1)
(1,0)
O c. (1,1)
A.
OB.
O D. (0,0)
1F
13. If X is distributed as Normal with mean 40 and variance 9, P(X = 40) is *
OA. 0.5
OB. 9/40
OC. cannot be determined
OD. None of the above
Transcribed Image Text:11. Suppose X and Y are random variables, c and d are constants. What is E(CX - DY)? A. E(X) - E(Y) OB. c-d B. c-d C. CE(X) + dE(Y) O D. CE(X) - dE(Y) 12. The mean and variance of a Standard Normal random variable are * O O O O (0,1) (1,0) O c. (1,1) A. OB. O D. (0,0) 1F 13. If X is distributed as Normal with mean 40 and variance 9, P(X = 40) is * OA. 0.5 OB. 9/40 OC. cannot be determined OD. None of the above
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