Question 62 1 pts When a person searches Google or another search engine, the search engine scans the internet looking for relevant content to provide answers. The most relevant results land at the top of the
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This is a common characteristic of search engine results pages (SERPs). Show more…
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Explain how search engines determine if websites contain relevant information or content.
Internet search engines report many hits, but getting on the first page is critical for a business. A study surveyed 1170 people from a U.S. online consumer panel in 2002 and independently surveyed a second panel of 1084 in 2009. Analysts found that 63% of those surveyed in 2009 clicked on a result on the first page, up from 47% in 2002. Complete parts (a) through (c) below. (a) Might the comparison between these two samples be confounded with a hidden factor? If so, identify such a factor. A. No, there are no hidden factors that could affect this comparison. B. Yes, possible factors are Internet speed, the search engine used, or age. C. Yes, possible factors are time of day and day of the week surveyed. D. Yes, possible factors are location, number of people surveyed, or internet access. (b) Find the 95% confidence interval for the difference between the proportion of users who click on a link on the first page of the search results in the two surveys. The 95% confidence interval is (-0.201, -0.119). (Round to three decimal places as needed.) (c) What do the results tell businesses about the importance of improving their search rank? A. Because this confidence interval does include zero, there is evidence that the proportion of viewers who click on a link on the first page has increased. B. Because this confidence interval does not include zero, there is evidence that the proportion of viewers who click on a link on the first page has increased. C. Because this confidence interval does not include zero, there is no evidence that the proportion of viewers who click on a link on the first page has increased. D. Because this confidence interval does include zero, there is no evidence that the proportion of viewers who click on a link on the first page has increased.
Jerelyn N.
Which best expresses the main idea of the fourth paragraph? Larry Page's ideas about links helped Google get to the top Links allow people to surf from one website to the next. Google is a website that serves important links to users. Larry Page contributed to the internet by inventing the link.
Dave K.
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