Advertisers contract with Internet service providers and search engines to place ads on websites. They pay a fee based on the number of potential customers who click on 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, 31% of advertisers claim they have been a victim of click fraud. Suppose a simple random sample of 280 advertisers will be taken to learn more about how they are affected by this practice. Use z-table. a. What is the probability that the sample proportion will be within ±0.05 of the population proportion experiencing click fraud? (to 4 decimals) b. What is the probability that the sample proportion will be greater than 0.35? (to 4 decimals)
Advertisers contract with Internet service providers and search engines to place ads on websites. They pay a fee based on the number of potential customers who click on 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, 31% of advertisers claim they have been a victim of click fraud. Suppose a simple random sample of 280 advertisers will be taken to learn more about how they are affected by this practice. Use z-table. a. What is the probability that the sample proportion will be within ±0.05 of the population proportion experiencing click fraud? (to 4 decimals) b. What is the probability that the sample proportion will be greater than 0.35? (to 4 decimals)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Transcribed Image Text:Advertisers contract with Internet service providers and search
engines to place ads on websites. They pay a fee based on the
number of potential customers who click on 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, 31% of advertisers claim they have
been a victim of click fraud. Suppose a simple random sample of 280
advertisers will be taken to learn more about how they are affected
by this practice. Use z-table.
a. What is the probability that the sample proportion will be within
±0.05 of the population proportion experiencing click fraud?
(to 4 decimals)
b. What is the probability that the sample proportion will be greater
than 0.35?
(to 4 decimals)
0- Icon Key
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