Probability rules
Given an event, A, what equation gives you the probability that event A will NOT occur?
What is ....
P(A') = 1 - P(A)
or
P(A')+P(A)=1
Two events are this if they share no outcomes in common
What is...
mutually exclusive or disjoint
What is the probability of rolling a 1 or a 2 on a fair six-sided die?
addition rule
Given two independent events, A and B, what is the probability that event A and B occurs.
What is...
P(A and B) = P(A) * P(B)
Variable where the number of outcomes can be counted and each outcome has a measurable and positive probability
What is...
Discrete Random Variable
What is the probability of rolling a 4 on a standard six-sided die and then flipping a coin and getting heads?
multiplication rule
Given two mutually exclusive events, A and B, what is the probability that event A or event B occurs?
What is ...
P(A or B)= P(A) + P(B)
two events that cannot occur together, but one must happen
What is...
complementary
If you have a bag with 3 red marbles and 4 green marbles, what is the probability of drawing a red marble and then another red marble without replacement?
multiplication rule
Given two events, A and B, what is the probability that event A and B occurs.
What is...
P(A and B) = P(A) * P(B|A)
contains all of the possible outcomes
what is...
sample space
In a deck of playing cards, what is the probability of drawing either a red card (hearts or diamonds) or a face card (king, queen, or jack)?
addition rule