The Nielsen Company measured connection speeds on home computers in nine different countries and wanted to determine whether connection speed affects the amount of time consumers spend online. Table 2.26 shows the percent of Internet users with a €˜€˜fast€ connection (defined as 2Mb or faster) and the average amount of time spent online, defined as total hours connected to the web from a home computer during the month of February 2011. The data are also available in the dataset GlobalInternet.

Table 2.26

(a) Use technology to find the mean and standard deviation of the nine values for percent with a fast connection.
(b) Use technology to find the mean and standard deviation of the nine values for time online.
(c) Does there seem to be a relationship between the two variables? Explain. (We examine this relationship further in Section 2.5.)

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Percent Fast Hours Connection Country Online Switzerland 88 20.18 United States 70 26.26 Germany 72 28.04 Australia 64 23.02 United Kingdom 75 28.48 France 70 27.49 Spain Italy 69 26.97 64 23.59 Brazil 21 31.58