Mathematical Statistics with Applications

7th Edition

ISBN: 9780495110811

Author: Dennis Wackerly, William Mendenhall, Richard L. Scheaffer

Publisher: Cengage Learning

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Concept explainers

Addition Rule of Probability

It simply refers to the likelihood of an event taking place whenever the occurrence of an event is uncertain. The probability of a single event can be calculated by dividing the number of successful trials of that event by the total number of trials.

Expected Value

When a large number of trials are performed for any random variable ‘X’, the predicted result is most likely the mean of all the outcomes for the random variable and it is known as expected value also known as expectation. The expected value, also known …

Probability Distributions

Understanding probability is necessary to know the probability distributions. In statistics, probability is how the uncertainty of an event is measured. This event can be anything. The most common examples include tossing a coin, rolling a die, or choosi…

Basic Probability

The simple definition of probability it is a chance of the occurrence of an event. It is defined in numerical form and the probability value is between 0 to 1. The probability value 0 indicates that there is no chance of that event occurring and the prob…

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Textbook Question

Chapter 14.4, Problem 16E

A survey to explore the relationship between voters’ church-attendance patterns and their choice of presidential candidate was reported in the Riverside Press-Enterprise prior to the 2004 presidential election. Voters were asked how often they attended church services and which of the two major presidential candidates (George W. Bush or John Kerry) they intended to vote for in the election. The results of a similar survey are contained in the following table.

Chapter 14.4, Problem 16E, A survey to explore the relationship between voters church-attendance patterns and their choice of

a Is there sufficient evidence to indicate dependence between reported frequency of church attendance and choice of presidential candidate in the 2004 presidential election? Test at the .05 level of significance. Place bounds on the attained significance level.
b Give a 95% confidence interval for the proportion of individuals who report attending church at least once per week.

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Chapter 14.4, Problem 15E

Chapter 14.4, Problem 17E

Chapter 14 Solutions

Mathematical Statistics with Applications

Ch. 14.3 - Historically, the proportions of all Caucasians in...Ch. 14.3 - Prob. 2E Ch. 14.3 - Prob. 3E Ch. 14.3 - Prob. 4E Ch. 14.3 - Prob. 5E Ch. 14.3 - Prob. 6E Ch. 14.3 - Prob. 7E Ch. 14.3 - Prob. 8E Ch. 14.3 - Prob. 9E Ch. 14.3 - Prob. 10E

Ch. 14.3 - The data in the following table are the frequency...Ch. 14.4 - On the 40th anniversary of President John F....Ch. 14.4 - A study was conducted by Joseph Jacobson and Diane...Ch. 14.4 - Suppose that the entries in a contingency table...Ch. 14.4 - A survey to explore the relationship between...Ch. 14.4 - Prob. 17E Ch. 14.4 - Prob. 18E Ch. 14.4 - The results of a study suggest that the initial...Ch. 14.4 - Refer to Exercise 14.10. Test the hypothesis, at...Ch. 14.4 - An interesting and practical use of the 2 test...Ch. 14.5 - A study to determine the effectiveness of a drug...Ch. 14.5 - The 2 test used in Exercise 14.22 is equivalent to...Ch. 14.5 - How do Americans in the sandwich generation...Ch. 14.5 - Does education really make a difference in how...Ch. 14.5 - A manufacturer of buttons wished to determine...Ch. 14.5 - Traditionally, U.S. labor unions have been content...Ch. 14.5 - Prob. 29E Ch. 14.5 - Refer to Exercise 14.29. Estimate the difference...Ch. 14.5 - A survey was conducted to investigate interest of...Ch. 14 - Prob. 32SE Ch. 14 - A survey was conducted to determine student,...Ch. 14 - How would you rate yourself as a driver? According...Ch. 14 - Prob. 35SE Ch. 14 - Knee injuries are a major problem for athletes in...Ch. 14 - It is often not clear whether all properties of a...Ch. 14 - Prob. 39SE Ch. 14 - Prob. 40SE Ch. 14 - Prob. 41SE Ch. 14 - Prob. 42SE Ch. 14 - Prob. 43SE

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Solution Summary: The author states whether the data provide sufficient evidence to indicate that there is dependence between reported frequency of church attendance and choice of presidential candidate in 2004 presidential election.

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Chapter 14 Solutions