Podcast
Questions and Answers
What is the probability that X is equal to 2 in the example provided?
What is the probability that X is equal to 2 in the example provided?
- 3/8 (correct)
- 1/8
- 1/3
- 1/4
If P(X) must be between 0 and 1, which of the following ranges is invalid?
If P(X) must be between 0 and 1, which of the following ranges is invalid?
- (0, 1)
- (0.5, 1)
- (0, 0.5) (correct)
- (0.2, 1)
In a probability histogram, what does the vertical axis represent?
In a probability histogram, what does the vertical axis represent?
- Total number of possible outcomes
- Number of times an event occurred
- Values of a random variable
- Probability of an event (correct)
If the sum of all possible probabilities is 1, what does this imply?
If the sum of all possible probabilities is 1, what does this imply?
Given a random variable X that represents the number of heads in three coin tosses, what is P(X=1)?
Given a random variable X that represents the number of heads in three coin tosses, what is P(X=1)?
What happens if the probability of an event is zero according to the text?
What happens if the probability of an event is zero according to the text?
What does the mean represent in the context of a discrete random variable?
What does the mean represent in the context of a discrete random variable?
What does the variance of a discrete random variable measure?
What does the variance of a discrete random variable measure?
Which formula is used to calculate the variance of a discrete random variable?
Which formula is used to calculate the variance of a discrete random variable?
What does the standard deviation of a discrete random variable measure?
What does the standard deviation of a discrete random variable measure?
In a probability distribution, if P(x) = 4/25, what does this value represent?
In a probability distribution, if P(x) = 4/25, what does this value represent?
What is the purpose of calculating the mean in probability distributions?
What is the purpose of calculating the mean in probability distributions?
What is the probability of rolling a number less than 5 on a six-sided die?
What is the probability of rolling a number less than 5 on a six-sided die?
If you randomly select a letter from the word 'PROBABILITY', what is the probability of selecting a vowel?
If you randomly select a letter from the word 'PROBABILITY', what is the probability of selecting a vowel?
When a fair six-sided die is rolled, what is the probability of rolling a prime number?
When a fair six-sided die is rolled, what is the probability of rolling a prime number?
If you spin a spinner with 8 equal sections numbered 1 through 8, what is the probability of landing on a multiple of 4?
If you spin a spinner with 8 equal sections numbered 1 through 8, what is the probability of landing on a multiple of 4?
When drawing a card from a standard deck, what is the probability of drawing a black card?
When drawing a card from a standard deck, what is the probability of drawing a black card?
A jar contains 8 red marbles and 5 blue marbles. What is the probability of randomly selecting a red marble?
A jar contains 8 red marbles and 5 blue marbles. What is the probability of randomly selecting a red marble?
