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)
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)
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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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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if x is distributed as normal with mean 40 and variance 9 what is P x=40 is
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