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Q 1/28
Score 0
Is the number of students in a classroom a random variable?
30
Sometimes
No
Yes
Depends on the class
Q 2/28
Score 0
Is the height of a randomly selected student from a school a random variable?
30
No
Yes
Only on certain days
Only if the student is tall
28 questions
Q.
Is the number of students in a classroom a random variable?
1
30 sec
Q.
Is the height of a randomly selected student from a school a random variable?
2
30 sec
Q.
Is the outcome of rolling a fair six-sided die a random variable?
3
30 sec
Q.
Is the number of pets owned by a family a random variable?
4
30 sec
Q.
Is the time it takes to complete a standardized test a random variable?
5
30 sec
Q.
Is the temperature measured in a city on a particular day a random variable?
6
30 sec
Q.
Is the number of questions answered correctly on a multiple-choice test a random variable?
7
30 sec
Q.
Is the number of emails received in a day a random variable?
8
30 sec
Q.
Is the result of flipping a coin (heads or tails) a random variable?
9
30 sec
Q.
Is the score of a basketball game a random variable?
10
30 sec
Q.
Which of the following is a continuous random variable?
11
30 sec
Q.
Which of the following best describes a discrete random variable?
12
30 sec
Q.
Which of the following represents a discrete random variable?
13
30 sec
Q.
What is an example of a continuous random variable?
14
30 sec
Q.
Which of the following is a discrete random variable?
15
30 sec
Q.
Which of the following is an example of a continuous random variable?
16
30 sec
Q.
Which of the following options is a continuous random variable?
17
30 sec
Q.
Which of the following is a discrete random variable?
18
30 sec
Q.
What is the sum of the probabilities in a discrete probability distribution?
19
30 sec
Q.
Which of the following is NOT a property of a discrete probability distribution?
20
30 sec
Q.
Which of the following values could be a valid probability in a discrete probability distribution?
21
30 sec
Q.
What must be true about the probabilities in a discrete probability distribution?
22
30 sec
Q.
If a discrete probability distribution consists of four outcomes with probabilities 0.1, 0.2, 0.3, and x, what should x be to satisfy the properties of a probability distribution?
23
30 sec
Q.
In a discrete probability distribution, if one of the probabilities is 0.7, what is the minimum possible value for another probability to ensure the distribution is valid?
24
30 sec
Q.
In a discrete probability distribution with five possible outcomes, what is the maximum value any single probability can have if all other probabilities are zero?
25
30 sec
Q.
In a discrete probability distribution, which of the following is a valid set of probabilities for three outcomes?
26
30 sec
Q.
What is the key characteristic of a probability mass function (PMF) in a discrete probability distribution?
27
30 sec
Q.
Which of the following statements about a discrete probability distribution is true?
