Bus Stats CH 4

A _________ of an experiment contains all possible outcomes of the experiment.

sample space

When constructing a joint possibility table, the cell in the lower right corner must always = 1

True

Mike is placing a bet on an upcoming horse race in which seven horses are running. Mike places a trifecta bet that wins only if he correctly picks the first, second, and third place horses in order. In how many different ways can Mike select three horses when order matters?

210 n!/(n-x)! = 7!/(7-3)! = 5040/24 = 210

If an event is getting a grade letter of A, what would be a compliment to receiving an A?

Getting any grade except an A

The probability that a customer will purchase a product is 0.15. The probability that a customer is a male is 0.5. The probability that a customer is a wale and will purchase a product is 0.075. The events purchasing a product and being a male are

Independent P(A)xP(B)=0.15 x 0.5 = 0.075 = p(A n B)

How many outcomes of an experiment constitute a simple event?

One

The compliment rule with respect to event A is

P(A^c)=1-P(A)

For two events A and B, the multiplication rule is

P(AnB)=P(A|B)xP(B) B occurs first then A happens second

0! = 1

True Zero Factorial

The relative frequency of an event is used to calculate what

an empirical probability

The ____________ formula is used to determine the number of different ways to arrange a group of x objects

combination

The probability of an event and its ________ must equal 1

complement

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

conditional

When comparing choices based on their qualities, you could summarize that data on a

contingency table

Events that cannot occur on the same trial of an experiment are mutually ________ events.

exclusive

A trial, or process, that produces several possible outcomes is referred to as an

experiment

A probability based on logical analysis rather than observation or personal judgement is best referred to as a

priori probability

A numerical value that measures the likelihood of an uncertain event

probability

A probability based on personal judgement rather than an observation or logical analysis is best referred to as a

subjective probability

The additional rule is used to calculate

the union of two events