2.The table shown below is a study about where people from different major cities in Canada primarily get their news:

(a)Is there enough evidence that the population proportions of people got the news by Internet are different for different city? Use 5% significance level. [3]

(b)If the answer in part (a) is yes, find out which city or cities are different, with 5% significance level. Do the grouping! [4]

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