Exam 5: A Survey of Probability Concepts

A firm offers routine physical examinations as part of a health service program for its employees. The exams showed that 8% of the employees needed corrective shoes,15% needed major dental work,and 3% needed both corrective shoes and major dental work. What is the probability that an employee selected at random will need either corrective shoes or major dental work?

You are assigned to design color codes for different parts. Three colors are used to code on each part. Once a combination of three colors is used-such as green,yellow,and red-these three colors cannot be rearranged to use as a code for another part. If there are 35 combinations,how many colors are available?

If two events are independent,then their joint probability is computed with ________.

The joint probability of two events,A and B,that are NOT independent is computed as P(A and B)= P(A)× P(B|A).

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

When are two experimental outcomes mutually exclusive?

Each salesperson in a large department store chain is rated on his or her sales ability and 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 will have an excellent potential for advancement given he or she also has above-average sales ability?

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-in other words,the same number cannot be used more than once in a total sequence. As examples,2,256,2,562,or 5,559 would not be permitted. How many different code groups can be designed?

What does the complement rule state?

Each salesperson in a large department store chain is rated on his or her sales ability and 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 will have below-average sales ability and fair potential for advancement?

In a management trainee program,80% of the trainees are female,while 20% are male. Ninety percent of the females attended college; 78% 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?

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

Bayes' theorem is a method to revise the probability of an event given additional information.

The result of a particular experiment is called a(n)________.

Which approach to probability assumes that events are equally likely?

How many permutations of the three letters C,D,and E are possible?

A graphical method used to calculate joint and conditional probabilities is ________.

A method of assigning probabilities based upon judgment,opinions,and available information is referred to as the ________.

What does equal?

A coin is tossed four times. The joint probability that all four tosses will result in a head is 1/4 or 0.25.