STAT 3321 Ch.4

the conditional probability of A given B is calculated by dividing the probability of intersection of A and B by the probability of

B.

the __________ formula is used to determine the number of different ways to arrange a group of X objects from a total of N objects and the order of the objects is irrelevant.

combination

the ___________ formula is used to determine the number of different ways to arrange a group of X objects from a total of N objects and the order of the objects is irrelevant.

combination

A ________ probability is the probability of an even given that another event has already occurred.

conditional

the total probability rule is used to compute an unconditional probability of an event by using

conditional probabilities

for hotels in new York city, a travel website wants to provide information comparing hotel costs (high, average, low) versus the quality ranking of the hotel (excellent, good, fair, poor). A useful way to summarize this data is to construct a(n)

contingency table

the ________ formula is used to determine the number of possible ways to arrange N items when there are no groups.

factorial

when some objects are randomly selected, which of the following statements is MOST accurate?

the order in which objects are selected does not matter in combinations

if two events are independent, then the probability that both events occur equals

the product of the individual liabilities

Bayes' theorem is calculated by using what rule in the denominator?

the total probability rule

in order to convert a contingency table into a joint probability table, the frequency of each cell is divided by the

total number of outcomes in the sample space