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Exam 5: A Survey of Probability Concepts

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Question 21

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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. What is the probability that a particular death is due to an automobile accident?

A) 24/883 or 0.027
B) 539/883 or 0.610
C) 24/333 or 0.072
D) 182/883 or 0.206

E) None of the above
F) A) and B)

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Question 22

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When applying the special rule of addition for mutually exclusive events,the joint probability is ________.

A) 1
B) 0.5
C) 0
D) unknown

E) B) and C)
F) A) and D)

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Question 23

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A study of interior designers' opinions with respect to the most desirable primary color for executive offices showed the following: What is the probability that a designer does NOT prefer red?

Which approach to probability is exemplified by the following formula? Probability of an event =

If there are "m" ways of doing one thing,and "n" ways of doing another thing,the multiplication formula states that there are (m)× (n)ways of doing both.

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 has excellent potential for advancement?

In a finance class,the final grade is based on three tests. Historically,the instructor tells the class that the joint probability of scoring As on the first two tests is 0.5. A student assigns a probability of 0.9 that she will get an A on the first test. What is the probability that the student will score an A on the second test given that she scored an A on the first test?

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 average sales ability and good potential for advancement?

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

A group of employees of Unique Services will be surveyed about a new pension plan. In-depth interviews with each employee selected in the sample will be conducted. The employees are classified as follows: What is the probability that the first person selected is either in maintenance or in secretarial?

A study by the National Park Service revealed that 50% of the vacationers going to the Rocky Mountain region visit Yellowstone Park,40% visit the Grand Tetons,and 35% visit both. What is the probability that a vacationer will visit at least one of these magnificent attractions?

Six basic colors are used in decorating a new condominium. They are applied to a unit in groups of four colors. One unit might have gold as the principal color,blue as a complementary color,red as the accent color,and touches of white. Another unit might have blue as the principal color,white as the complementary color,gold as the accent color,and touches of red. If repetitions are permitted,how many different units can be decorated?

When an event's probability depends on the occurrence of another event,the probability is a(n) ________.

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 male who did NOT attend college?

The probability of a particular event occurring,given that another event has occurred,is known as a(n) ________.

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

An individual can assign a subjective probability to an event based on the individual's knowledge about the event.

The process used to calculate the revised probability of an event given additional information can be obtained through ________.

Using the terminology of Bayes' theorem,a posterior probability can also be defined as a

The first card selected from a standard 52-card deck was a king. If it is returned to the deck,what is the probability that a king will be drawn on the second selection?