Wk 4: Probability Distribution
Quiz by Christlie Rose Nicolas
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- Q1
Fair dice are rolled and the numbers that appear are added. What is the probability that this sum is at least 5?
5/6
5/12
1/6
5/36
120sM11/12SP-IIIa-4 - Q2
A fair coin is flipped three times. What is the probability of seeing heads exactly once?
1/8
1/2
3/8
1/6
120sM11/12SP-IIIa-4 - Q3
A fair coin is flipped three times. What is the probability of seeing heads at least once?
1/8
1/6
6/7
7/8
120sM11/12SP-IIIa-4 - Q4
The Sum Rule states that the sum of the probabilities of all instances of a random variable equals
1
0
2
-1
120sM11/12SP-IIIa-4 - Q5
Two fair dice are rolled and the numbers that appear are added. What is the probability that this sum is exactly 3?
1/12
1/4
1/18
1/6
120sM11/12SP-IIIa-4 - Q6
Let set A = {1, 2, 3, 4} and set B = {2, 3, 5, 7}. One number is chosen at random from each set and their sum is calculated. What is the probability that this sum is exactly 6?
1/4
1/16
3/8
3/16
120sM11/12SP-IIIa-4 - Q7
Let set A = {1, 2, 3, 4} and set B = {2, 3, 5, 7}. One number is chosen at random from each set and their sum is calculated. What is the probability that this sum is less than 6?
1/3
5/16
5/8
3/8
120sM11/12SP-IIIa-4 - Q8
If fair coin is tossed twice, what is the possibility of seeing heads exactly once?
3/4
1/2
1/3
2/3
120sM11/12SP-IIIa-4 - Q9
In a valid probability distribution, the probabilities must:
be between 0 and 1 and the sum of probabilities is less than 1
be between 0 and 1 and the sum of probabilities is greater than 1
be between 0 and 1 and the sum of probabilities is a positive number
be between 0 and 1 and the sum of probabilities is 1
120sM11/12SP-IIIa-4 - Q10
Find the missing value for P(X=5) in the probability distribution:
0.01
0.21
0.11
0.31
120sM11/12SP-IIIa-4
