Question #1 [10 marks] Is smiling independent of age? Randomly selected people were observed for about...

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Question #1 [10 marks] Is smiling independent of age? Randomly selected people were observed for about 10 seconds in several public places, such as shopping malls and restaurants, to see whether they smiled during this observation period. The following contingency table shows the results for different age groups. Age Group <10 11-20 21-40 41-60 >61 Smile 1131 1748 No Smile 1187 2020 1608 3038 937 522 2124 1509 Use the methodology and techniques presented in lectures 14 and 15 to conduct bivariate analysis of these data. Include side-by-side bar charts; carry out the chi-square test for independence using four steps. Clearly state your conclusions in context and be sure to include numeric measures (e.g. proportions or percentages) with your statements. Question #1 [10 marks] Is smiling independent of age? Randomly selected people were observed for about 10 seconds in several public places, such as shopping malls and restaurants, to see whether they smiled during this observation period. The following contingency table shows the results for different age groups. Age Group <10 11-20 21-40 41-60 >61 Smile 1131 1748 No Smile 1187 2020 1608 3038 937 522 2124 1509 Use the methodology and techniques presented in lectures 14 and 15 to conduct bivariate analysis of these data. Include side-by-side bar charts; carry out the chi-square test for independence using four steps. Clearly state your conclusions in context and be sure to include numeric measures (e.g. proportions or percentages) with your statements.