|
Q1:
|
The probabilities in the probability function table of a discrete random variable always add up to: |
A. 1
B. 0
C. 0.5
D. 2 |
Answer 1:
|
|
|
Q2:
|
| x |
1
|
2
|
3
|
4
|
| P(X = x) |
0.3
|
0.1
|
0.4
|
k
|
For the probability distribution shown above what is the value of k?
|
A. 4
B. 0.4
C. 0.3
D. 0.2 |
Answer 2:
|
|
|
Q3:
|
Which of the following cannot be true? |
A. P(A) = 0
B. P(A) = 0.99
C. P(A) = 1
D. P(A) = 1.1 |
Answer 3:
|
|
|
Q4:
|
If the probability distribution function for a discrete random variable is given by P(W = w) = kw for w = 3, 4, 5
what is the value of k?
|
A. 12
B. 1
C. 1 / 12
D. 0.12 |
Answer 4:
|
|
|
Q5:
|
In the question above, what is P(W = 3) |
A. P(W = 3) = 0
B. P(W = 3) = 0.5
C. P(W = 3) = 0.25
D. P(W = 3) = 0.3 |
Answer 5:
|
|
