statistics

Q: E(4X + 5) =________

(a) :  12 E (X)
(b) :  4 E (X) + 5
(c) :  16 E (X) + 5
(d) :  16 E (X)
(e) :  NONE
Answer:  4 E (X) + 5
Explanation:  

Q: In regression line Y=a+bX, Y is called:

(a) :  Dependent variable
(b) :  Independent variable
(c) :   Explanatory variable
(d) :   Regressor
(e) :  NONE
Answer:  Dependent variable
Explanation:  

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