Exercise 7.45 introduced a 2010 study about users of social networking sites such as Facebook. Table 7.34 shows the frequency of users €˜€˜liking€ content on Facebook, with the data shown by gender. Does the frequency of €˜€˜liking€ depend on the gender of the user? Show all details of the test.

Table 7.34

The Pew Research Center conducted a survey of randomly sampled American adults in 2008 and in 2010, asking them about their use of social networking sites such as Facebook. Table 7.31 shows age groups of social networking site users in 2008 and in 2010. Did the age distribution change significantly in the two-year time span? Show all details of the test.

Table 7.31

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ĮLiking/Gender–→ Every day 3–5 days/week 1-2 days/week Every few weeks Less often Total Male Female 142 Total 219 93 77 39 54 69 131 62 42 44 182 86 166 348 491 386 877 2008 Total ȚAge/Year→ 2010 152 18–22 23-35 36–49 138 290 197 303 500 354 108 246 50+ Total 52 495 246 298 947 1442