Exam 5: A Survey of Probability Concepts

What is a collection of one or more basic outcomes called? __________

The number of times an event occurred in the past is divided by the total number of occurrences.What is this approach to probability called? ____________________

To apply the special rule of addition,the events must be mutually exclusive.

What does the complement rule state?

A permutation of a set of objects is defined by the order of the objects.

In a management trainee program,80 percent of the trainees are female,20 percent male.Ninety percent of the females attended college,78 percent of the males attended college.A management trainee is selected at random.What is the probability that the person selected is a female who did attend college?

Three defective electric toothbrushes were accidentally shipped to a drugstore by the manufacturer along with 17 non-defective ones.What is the probability that the first two electric toothbrushes sold will be returned to the drugstore because they are defective?

If two events are mutually exclusive,then P(A or B)= P(A)P(B).

The probability that the Tampa Bay Buccaneers will be in the Super Bowl this season must be between 0 and 10.

A weather forecaster announced that the probability of rain tomorrow is -1.0.We conclude there is no chance of rain.

The probability of rolling a 3 or 2 on a single die is an example of joint probability.

A probability is usually expressed as a decimal,such as 0.70 or 0.27,but it can also be expressed as a fraction,such as 7/10 or 27/100.

A board of directors consists of eight men and four women.A four-member search committee is randomly chosen to recommend a new company president.What is the probability that all four members of the search committee will be women?

An automatic machine inserts mixed vegetables into a plastic bag. Past experience revealed that some packages were underweight and some were overweight, but most of them had satisfactory weight. -What is the probability of selecting three packages that are overweight?

A gumball machine has just been filled with 50 black,150 white,100 red and 100 yellow gum balls that have been thoroughly mixed.Sue and Jim,each,purchased one gumball.What is the likelihood both Sue and Jim get red gumballs?

What is it called when the order of a set of objects selected from a single group is important? _________

What are two events called when the occurrence of one event does not affect the occurrence of the other event? ___________________.

The closer a probability is to 0,the more likely the event will happen.

When the special rule of multiplication is used,the events must be ________________.

What is a measured or observed activity called? _________________