If a random variable X follows a standard normal distribution, what is P(X = 0)?
0.5
1
Cannot be determined.
0
A fair six-sided die is rolled. What is the expected value of the roll?
4
2.5
3.5
3
You roll a fair six-sided die. What is the probability of rolling a number greater than 4?
1/6
1/2
2/3
1/3
What does the complement rule in probability state?
The probability of an event is always 1.
The probability of two events happening is the sum of their individual probabilities.
The probability of an event happening is equal to the probability of it not happening.
The probability of an event not happening is 1 minus the probability of it happening.
If you roll a fair six-sided die, what is the probability of rolling a 3 OR an even number?
A fair coin is flipped twice. What is the expected value of the number of heads?
1.5
2
Which of the following is an example of a discrete random variable?
The temperature of a room.
The number of heads when a coin is flipped four times.
The height of a student.
The weight of an apple.
How many different ways can you arrange the letters in the word "DATA"?
12
24
16
You are playing a game where you roll a die until you get a 6. What is the probability that you will roll the die exactly 4 times before winning?
(5/6)^3 * (1/6)
(1/6)^3 * (5/6)
(5/6)^4 * (1/6)
(1/6)^4
Which of the following is NOT a valid probability value?
1.25
0.75