7th Edition

ISBN: 9781111792374

Author: WEIERS

Publisher: Cengage Learning

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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.

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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…

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Textbook Question

Chapter 5.6, Problem 5.45E

For U.S. live births, P(boy) and P(girl) are approximately 0.51 and 0.49, respectively.a According to a newspaper article, a medical process could alter the probabilities that a boy or a girl will be born. Researchers using the process claim that couples who wanted a boy were successful 85% of the time, while couples who wanted a girl were successful 77% of the time.b Assuming that the medical process does have an effect on the sex of the child: ^aSource: Bureau of the Census, Statistical Abstract of the United States 2009. P.Steve Twedt, Boy-Girl Selection Available Soon Here, Pittsburgh Press, December 31. 1987. pp. 1. 10.

a. Without medical intervention, what is the probability of having a boy?

b. With medical intervention, what is the conditional probability that a couple who wants a boy will have a boy?

c. With medical intervention, what is the conditional probability that a couple who wants a girl will have a girl?

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Chapter 5.5, Problem 5.44E

Chapter 5.6, Problem 5.46E

Chapter 5 Solutions

Introduction to Business Statistics

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Solution Summary: The author explains that the probability of having a boy without medical intervention is 0.51, whereas the conditional probability that couple who wants to have boy and girl are 0.77.

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