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K When a company advertises on the Internet, the company pays the operators of search engines each time an ad for the company appears with search results and someone clicks on the link. Click fraud is when a computer program pretending to be a customer clicks on the link. An analysis of 1,700 clicks coming into a company's site during a week identified 220 of these clicks as fraudulent. Complete parts (a) through (c) below. (a) Under what conditions does it make sense to treat these 1,700 clicks as a sample? What would be the population? Identify the necessary conditions. Select all that apply. (...) A. The company must be representative of all companies that advertise on the Internet. B. The week must be randomly selected. C. The week must be representative of a typical week. D. The clicks must be selected at random. Identify the population below. OA. All companies that advertise on the Internet OB. All clicks into this company's site W C

K When a company advertises on the Internet, the company pays the operators of search engines each time an ad for the company appears with search results and someone clicks on the link. Click fraud is when a computer program pretending to be a customer clicks on the link. An analysis of 1,700 clicks coming into a company's site during a week identified 220 of these clicks as fraudulent. Complete parts (a) through (c) below. (a) Under what conditions does it make sense to treat these 1,700 clicks as a sample? What would be the population? Identify the necessary conditions. Select all that apply. (...) A. The company must be representative of all companies that advertise on the Internet. B. The week must be randomly selected. C. The week must be representative of a typical week. D. The clicks must be selected at random. Identify the population below. OA. All companies that advertise on the Internet OB. All clicks into this company's site W C

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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K When a company advertises on the Internet, the company pays the operators of search engines each time an ad for the company appears with search results and someone clicks on the link. Click fraud is when a computer program pretending to be a customer clicks on the link. An analysis of 1,700 clicks coming into a company's site during a week identified 220 of these clicks as fraudulent. Complete parts (a) through (c) below. UA. All companies that advertise on the Internet OB. All clicks into this company's site OC. All clicks on ads placed in search results O D. All fraudulent clicks (b) Show the 95% confidence interval for the population proportion of fraudulent clicks in a form suitable for sharing with a nontechnical audience. The 95% confidence interval for the population proportion is % to%). (Round to one decimal place as needed.) (c) If a company pays the operators of a search engine $4.75 for each click, give a 95% confidence interval for the mean cost per click due to fraud. The 95% confidence interval for the mean cost is $ to S (Round to the nearest cent as needed.) +
Transcribed Image Text:K When a company advertises on the Internet, the company pays the operators of search engines each time an ad for the company appears with search results and someone clicks on the link. Click fraud is when a computer program pretending to be a customer clicks on the link. An analysis of 1,700 clicks coming into a company's site during a week identified 220 of these clicks as fraudulent. Complete parts (a) through (c) below. UA. All companies that advertise on the Internet OB. All clicks into this company's site OC. All clicks on ads placed in search results O D. All fraudulent clicks (b) Show the 95% confidence interval for the population proportion of fraudulent clicks in a form suitable for sharing with a nontechnical audience. The 95% confidence interval for the population proportion is % to%). (Round to one decimal place as needed.) (c) If a company pays the operators of a search engine $4.75 for each click, give a 95% confidence interval for the mean cost per click due to fraud. The 95% confidence interval for the mean cost is $ to S (Round to the nearest cent as needed.) +
K When a company advertises on the Internet, the company pays the operators of search engines each time an ad for the company appears with search results and someone clicks on the link. Click fraud is when a computer program pretending to be a customer clicks on the link. An analysis of 1,700 clicks coming into a company's site during a week identified 220 of these clicks as fraudulent. Complete parts (a) through (c) below. (a) Under what conditions does it make sense to treat these 1,700 clicks as a sample? What would be the population? Identify the necessary conditions. Select all that apply. A. The company must be representative of all companies that advertise on the Internet. B. The week must be randomly selected. C. The week must be representative of a typical week. D. The clicks must be selected at random. Identify the population below. OA. All companies that advertise on the Internet OB. All clicks into this company's site W C
Transcribed Image Text:K When a company advertises on the Internet, the company pays the operators of search engines each time an ad for the company appears with search results and someone clicks on the link. Click fraud is when a computer program pretending to be a customer clicks on the link. An analysis of 1,700 clicks coming into a company's site during a week identified 220 of these clicks as fraudulent. Complete parts (a) through (c) below. (a) Under what conditions does it make sense to treat these 1,700 clicks as a sample? What would be the population? Identify the necessary conditions. Select all that apply. A. The company must be representative of all companies that advertise on the Internet. B. The week must be randomly selected. C. The week must be representative of a typical week. D. The clicks must be selected at random. Identify the population below. OA. All companies that advertise on the Internet OB. All clicks into this company's site W C
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