#1
What is conditional probability?
The probability of an event occurring given that another event has already occurred
ExplanationConditional probability is the likelihood of an event happening based on the occurrence of another event.
#2
In probability, what does P(A and B) represent?
The intersection of events A and B
ExplanationP(A and B) represents the probability of both events A and B occurring together.
#3
What is the formula for conditional probability P(A | B)?
P(A and B) / P(B)
ExplanationConditional probability P(A | B) is calculated by dividing the probability of both events A and B occurring by the probability of event B.
#4
If events A and B are independent, what is P(A and B)?
P(A) * P(B)
ExplanationFor independent events A and B, the probability of both events occurring is the product of their individual probabilities.
#5
If events A and B are mutually exclusive, what is P(A and B)?
0
ExplanationMutually exclusive events cannot occur together, so the probability of both happening simultaneously is 0.
#6
What is the complement of an event in probability?
The probability of the event not occurring
ExplanationThe complement of an event in probability is the probability of the event not happening.
#7
What is a probability chain in probability theory?
A sequence of dependent events
ExplanationA probability chain is a series of events where each event's probability depends on the outcome of the previous event.
#8
In a deck of playing cards, what is the probability of drawing two consecutive cards of the same suit without replacement?
1/26
ExplanationThe probability of drawing two consecutive cards of the same suit without replacement from a deck of cards is 1/26.
#9
What is the Law of Total Probability?
P(A) = P(A | B) * P(B) + P(A | B') * P(B')
ExplanationThe Law of Total Probability states that the probability of an event A is the sum of the probabilities of A given different conditions.
#10
In a group of 30 people, what is the probability that at least two people share the same birthday?
0.95
ExplanationIn a group of 30 people, the probability that at least two people share the same birthday is 0.95.
#11
What is Bayes' Theorem used for in probability theory?
Calculating conditional probability
ExplanationBayes' Theorem is a fundamental theorem used to calculate conditional probabilities by reversing the order of conditional probabilities.