A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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Concept explainers

Compound Probability
Compound probability can be defined as the probability of the two events which are independent. It can be defined as the multiplication of the probability of two events that are not dependent.
Tree diagram
Probability theory is a branch of mathematics that deals with the subject of probability. Although there are many different concepts of probability, probability theory expresses the definition mathematically through a series of axioms. Usually, these axi…
Conditional Probability
By definition, the term probability is expressed as a part of mathematics where the chance of an event that may either occur or not is evaluated and expressed in numerical terms. The range of the value within which probability can be expressed is between…
Question

 (a) There are 10 chairs in a row and 8 people to be seated. In how many ways can this be done?
(b) There are 10 questions on a test and you are to do 8 of them. In how many ways can you choose them?
(c) In part (a) what is the probability that the first two chairs in the row are
vacant?
(d) In part (b), what is the probability that you omit the first two problems in the test?
(e) Explain why the answer to parts (a) and (b) are different, but the answers to
(c) and (d) are the same.

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