Exam 5: A Survey of Probability Concepts

If there is absolutely no chance a person will purchase a new car this year,what is the probability assigned to this event? ______

The probability of an event that is affected by two or more different events is called a(n)

A study of 200 computer service firms revealed these incomes after taxes: What is the probability that a particular firm selected has $1 million or more in income after taxes?

An electronics firm sells four models of stereo receivers,three CD decks,and six speaker brands.When the four types of components are sold together,they form a "system." How many different systems can the electronics firm offer?

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 male who did NOT attend college?

The National Center for Health Statistics reported that of every 883 deaths in recent years,24 resulted from an automobile accident,182 from cancer and 333 from heart disease.Using the relative frequency approach,what is the probability that a particular death is due to an automobile accident?

An experiment is an activity that is either observed or measured.

There are 10 rolls of film in a box and 3 are defective.Two rolls are selected without replacement.What is the probability of selecting a defective roll followed by another defective roll?

What approach to probability is based on a person's degree of belief that a particular event will happen? _________

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

Each salesperson in a large department store chain is rated on their sales ability and their potential for advancement. The data for the 500 sampled salespeople are summarized in the following table. -What is the probability that a salesperson selected at random has above average sales ability and is an excellent potential for advancement?

If only one of several events can occur at a time,the events are mutually exclusive.

A survey of top executives revealed that 35% of them regularly read Time magazine,20% read Newsweek and 40% read U.S.News & World Report.Ten percent read both Time and U.S.News & World Report.What is the probability that a particular top executive reads either Time or U.S.News & World Report regularly?

A rug manufacturer has decided to use 7 compatible colors in her rugs.However,in weaving a rug,only 5 spindles can be used.In advertising,the rug manufacturer wants to indicate the number of different color groupings for sale.How many color groupings using the seven colors taken five at a time are there? (This assumes that 5 different colors will go into each rug,i.e. ,there are no repetitions of color. )

A graphical method used to calculate joint and conditional probabilities is

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?

The numbers 0 through 9 are used in code groups of four to identify an item of clothing.Code 1083 might identify a blue blouse,size medium.The code group 2031 might identify a pair of pants,size 18,and so on.Repetitions of numbers are not permitted,i.e. ,the same number cannot be used more than once in a total sequence.As examples,2256,2562 or 5559 would not be permitted.How many different code groups can be designed?

An illustration of an experiment is turning the ignition key of an automobile as it comes off the assembly line to determine whether or not the engine will start.

Which approach to probability assumes that the events are equally likely?

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 NOT attend college?