Unit 11 Probability
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the probability of event A given event B, denoted as P(A|B)?
Back
P(A|B) = P(A and B) / P(B) - This formula calculates the conditional probability of A occurring given that B has occurred.
2.
FLASHCARD QUESTION
Front
Define independent events in probability.
Back
Independent events are two events where the occurrence of one event does not affect the occurrence of the other.
3.
FLASHCARD QUESTION
Front
Define dependent events in probability.
Back
Dependent events are two events where the occurrence of one event affects the occurrence of the other.
4.
FLASHCARD QUESTION
Front
What is the formula for calculating the probability of not A, denoted as P(not A)?
Back
P(not A) = 1 - P(A) - This formula calculates the probability that event A does not occur.
5.
FLASHCARD QUESTION
Front
If a card is drawn from a standard deck of 52 cards, what is the probability of drawing a heart?
Back
P(Heart) = 13/52 = 1/4 - There are 13 hearts in a deck of 52 cards.
6.
FLASHCARD QUESTION
Front
What is the probability of drawing two aces in a row without replacement from a deck of cards?
Back
P(Ace 1) * P(Ace 2|Ace 1) = (4/52) * (3/51) = 1/221.
7.
FLASHCARD QUESTION
Front
In a class of 30 students, 18 are girls. What is the probability of randomly selecting a girl?
Back
P(Girl) = 18/30 = 3/5.
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