CONTINGENCY TABLES

4 The correct size of a certain object is 21.21 millimeters. Based on that, the data can be summarized into the following table indicating the numbers of children from each group who drew the certain object too small and too large: - m n \" Based on this data: (give your answers as fractions, or decimals to at least 3 decimal places) a) The proportion of children from group 1 that drew the object too large is: b) The proportion of children from group 2 that drew the object too large is: c) The proportion of all children that drew the object too large is: d) If a child is picked at random, what is the probability they are in group 1, given they drew the object too large? e) If a child is picked at random, what is the probability they are in group 2 0R drew the object too large? 5.A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults, asked those adults about their party affiliation (Democrat, Republican or none) and their opinion of how the US economy was changing ("getting better," \"getting worse" or "about the same"). The results are shown in the table below. be . w t t i 0 e r r r l S e Revub 38 1 4 lican 3 4 4 Democ 12 3 1 rat 7 * none 21 g 1 G 1 8 Express each of your answers as a percent rounded to the nearest tenth (for example, 12.3%]. a. What percent of survey respondents identified themselves as Democrats? 96 b. What percent of survey respondents thought the economy was getting better? 95 c. What percent of Democrats thought the economy was getting better? 96 d. Among survey respondents who thought the economy was getting better, what percent were Democrats? 96