kaykayhodge
06.05.2020 •
Mathematics
Which of the following statement is true? A. For any discrete random variable X and constants a and b, E(aX+b) = (a + b). E(X) B. For any discrete random variable X and constants a and b, V(aX+b) = . C. If a constant c is added to each possible value of a discrete random variable X, then the variance of X will be shifted by that same constant amount. D. If a constant c is added to each possible value of a discrete random variable X, then the expected value of X will be shifted by that same constant amount.
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Ответ:
A. False
B. False
C. False
D. True
Step-by-step explanation:
A. False
Remember that E[aX+b] = aE[X] + b, therefore the equality would be true only if E[X] = 1.
B. False
Remember that .
C. False
In other words they are telling you in words that , that is false because
D. True
That is a property of the expected value E[X+b] = E[X]+b
Ответ:
The difference between the maximum and the minimum temperature on that day is
Step-by-step explanation:
The maximum temperature of an island was recorded
The minimum temperature was recorded
Difference in temperature