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Q 1/20
Score 0
How would you evaluate the claim that the possible values of the random variable representing 'number of tardy students' are {0, 1, 2, 3, 4}?
30
The claim is correct because all unique values in the data are included.
The claim is correct because the values represent a continuous random variable.
The claim is incorrect because the value 4 was not observed frequently enough.
The claim is incorrect because the possible values should include numbers beyond 4.
Q 2/20
Score 0
What is the sum of all probabilities in the probability distribution of a discrete random variable?
30
2
0.5
0
1
20 questions
Q.
How would you evaluate the claim that the possible values of the random variable representing 'number of tardy students' are {0, 1, 2, 3, 4}?
1
30 sec
Q.
What is the sum of all probabilities in the probability distribution of a discrete random variable?
2
30 sec
Q.
If each number from 1 to 10 is equally likely to be selected, what is the probability of obtaining any specific number?
3
30 sec
Q.
Why is the outcome of spinning the raffle wheel considered a discrete random variable?
4
30 sec
Q.
Which statement best describes the probability distribution of spinning the raffle wheel?
5
30 sec
Q.
If the random variable Y represents the outcome of the spin, what is the probability that Y is an even number?
6
30 sec
Q.
What is the formula for calculating the mean (μ) of a discrete random variable?
7
30 sec
Q.
In the given probability distribution, what is the sum of all probabilities P(z)?
8
30 sec
Q.
Why is the given table considered a valid probability distribution?
9
30 sec
Q.
What does the mean (μ) of the random variable Z represent in the context of the problem?
10
30 sec
Q.
A teacher collected data on the number of absences in a class over a month. A student claims that the possible values of the random variable representing 'number of absences' are {0, 1, 2, 3, 4}. How would you evaluate this claim?
11
30 sec
Q.
What is the sum of all probabilities in the probability distribution of a discrete random variable?
12
30 sec
Q.
For a six-sided die, what is the probability of rolling any specific number (e.g., 1, 2, 3, etc.)?
13
30 sec
Q.
Why is the outcome of rolling a six-sided die considered a discrete random variable?
14
30 sec
Q.
Which statement best describes the probability distribution of rolling a fair six-sided die?
15
30 sec
Q.
A game involves rolling a fair six-sided die. If the random variable X represents the outcome, what is the probability that X is an even number?
16
30 sec
Q.
What is the formula for calculating the mean (μ) of a discrete random variable?
17
30 sec
Q.
In the given probability distribution, what is the sum of all probabilities P(x)?
18
30 sec
Q.
Why is the given table considered a valid probability distribution?
19
30 sec
Q.
What does the mean (μ) of the random variable X represent in the context of the problem?
