Essentials of Modern Business Statistics with Microsoft Office Excel (Book Only)
Essentials of Modern Business Statistics with Microsoft Office Excel (Book Only)
7th Edition
ISBN: 9781337298353
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
Publisher: South-Western College Pub
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear re…
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Chapter 7, Problem 52SE

Advertisers contract with Internet service providers and search engines to place ads on websites. They pay a fee based the number of potential customers who click their ad. Unfortunately, click fraud—the practice of someone clicking on an ad solely for the purpose of driving up advertising revenue—has become a problem. According to BusinessWeek, 40% of advertisers claim they have been a victim of click fraud. Suppose a simple random sample of 380 advertisers will be taken to learn more about how they are affected by this practice.
a. What is the probability that the sample proportion will be within ± .04 of the population proportion experiencing click fraud?
b. What is the probability that the sample proportion will be greater than .45?

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Chapter 7 Solutions

Essentials of Modern Business Statistics with Microsoft Office Excel (Book Only)

Ch. 7.2 - Consider a finite population with five elements...Ch. 7.2 - The 2012 American League consists of 14 baseball...Ch. 7.3 - The following data are from a simple random...Ch. 7.3 - Morningstar publishes ratings data on 1208 company...Ch. 7.3 - Prob. 13ECh. 7.5 - Suppose a random sample of size 50 is selected...Ch. 7.5 - The average full-sized front-loading Energy Star...Ch. 7.5 - Prob. 22ECh. 7.5 - Prob. 25ECh. 7.6 - A random sample of size 100 is selected from a...
Ch. 7.6 - The Wall Street Journal reported that the age at...Ch. 7.6 - Thirty-six percent of all Americans drink bottled...Ch. 7.6 - The Grocery Manufacturers of America reported that...Ch. 7.8 - Consider the Spontanversation sampling problem for...Ch. 7 - A researcher reports survey results by stating...Ch. 7 - Advertisers contract with Internet service...Ch. 7 - Marion Dairies Last year Marion Dairies decided to...Ch. 7 - Marion Dairies Last year Marion Dairies decided to...Ch. 7 - Marion Dairies Last year Marion Dairies decided to...
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