Exam 4: A Survey of Probability Concepts

If two events are independent, then their joint probability is

A probability that is based on someone's opinion, guess or hunch is_________ .

Suppose four heads did appear face up on the toss of a coin four times. The probability that a head will appear face up in the next toss of the coin is____ .

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?

The customer service department of H&R Block received a total of 235 telephone requests for a tip- sheet on personal tax or corporate tax. The following table summarizes callers' primary area of interest, and how they first heard about the tip-sheet. What is the probability a caller is interested in personal tax given that he first heard of the tip-sheet in the newspaper?

If there are five vacant parking places and five automobiles arrive at the same time, they can park in______different ways.

Each salesperson in a large department store chain is rated with respect to sales potential for advancement. These traits for the 500 salespeople were cross-classified into the following table: What is the probability that the selected salesperson has below average sales ability?

Considering the chart below, what is the probability that if you select one person at random that they have committed a violent crime?

A lamp manufacturer has developed five lamp bases and four lampshades that could be used together. How many different arrangements of base and shade can be offered?

Which approach to probability is exemplified by the following formula?

Each salesperson in a large department store chain is rated with respect to sales potential for advancement. These traits for the 500 salespeople were cross classified into 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?

i. The Cunard luxury liner, Queen Elizabeth 2, cannot be docked in Hong Kong and Bangkok at the same time. Events such as these that cannot occur simultaneously are said to be collectively exhaustive. Ii) 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. Iii) A permutation is an arrangement of a set of objects in which order does not matter.

When the special rule of multiplication is used events A and B must be______

When an experiment is conducted "without replacement",

When an event's probability depends on the likelihood of another event, the probability is

A probability is__________ if it is based on a person's degree of belief and hunches that a particular event will happen.

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 and finding that all three of them are satisfactory?

A new computer game has been developed and its market potential is to be tested by 80 veteran game players. If sixty players liked the game, the probability that veteran game players will like the new computer game is_____ .

Considering the chart below, what is the probability that if you select one person at random that they have committed a violent crime and were under 20 years of age?

Information on the 30 Major League Baseball teams for the 2003 season has been summarized based on game attendance. What is the probability that if a team is selected at random, it had a winning season?