Probability Basics
What is a sample space?
An outcome in which event A does not occur.
Hint: Ac
What is the complement of A?
P(B|A)
What is the probability of B, given that A occurs?
A random variable whose possible values can be listed.
What is a discrete random variable?
The number of trials.
What is n?
A die in which each number is equally likey to come up.
What is a fair die?
P(A or B) = P(A) + P(B) - P(A and B)
What is the general addition rule?
P(A and B) = P(A)*P(B|A)
What is the General Multiplication Rule?
A random variable that can take on any value within the interval.
What is a continuous random variable?
The probability of success
What is p?
When a probability experiment is repeated many times, the proportion of times an event occurs will approach its probability.
What is the law of large numbers?
P(A and B) = 0
What is a mutually exclusive event?
An event where one occurrence affects the probability of other events.
What is a dependent event?
A histogram that represents a discrete probability distribution.
What is a probability histogram?
The probability of success is the same on each trial.
What is a condition for the binomial distribution?
An event where the probability is 0.05 or less.
What is an unusual event?
An event formed by combining 2+ events.
What is a compound event?
P(A and B) = P(A)P(B)
What is the Multiplication Rule for Independent Events?
Also known as the mean of a random variable.
What is an expected value?
sqrt(np(1-p))
What is the standard deviation (σx) of a binomial random variable?
Repeating an experiment a large number of times in order to approximate its actual probability.
What is the Empirical Method?
A diagram in which events are represented by circles which overlap when both events occur at the same time.
What is a Venn diagram?
To remove an item when sampling it.
What is sampling without replacement?
As the sample size grows larger, the sample mean will approach the population mean.
What is the Law of Large Numbers for Means?
binompdf(n,p,x)
What is the calculator command for an exact binomial outcome?