Task 1: Compute a 95% confidence interval for the proportion of students' prefence of the class who likes the Cubs after finding    the numbers first.         Students' Preference                                      Count Data for Team Preference       1 Cubs   Number of students Preferred Cubs   2 Cubs   Total number of  students   3 White Sox   Proportion of students who like the Cubs   4 White Sox       5 Cubs    Standard derivation of Proportion   6 Cubs   Left end point of the 95% confidence interval   7 Cubs    Right end point of the 95% confidence interval   8 Cubs       9 White Sox   95% confidence interval of proportion is (4 decimals) [ ,] 10 Cubs       11 White Sox       12 White Sox       13 Cubs        14 Cubs       15 Cubs        16 Cubs       17 Cubs       18 White Sox       19 Cubs        20 Cubs       21 Cubs        22 Cubs       23 Cubs       24 White Sox       25 Cubs       26 White Sox       27 White Sox       28 White Sox       29 Cubs        30 Cubs       31 Cubs        32 Cubs       33 Cubs       34 White Sox       35 Cubs        36 Cubs       37 Cubs        38 Cubs       39 Cubs        40 Cubs       41 White Sox       42 White Sox       43 Cubs        44 Cubs       45 Cubs        46 Cubs       47 Cubs        48 Cubs       49 White Sox       50 Cubs       51 White Sox       52 White Sox       53 Cubs        54 Cubs       55 Cubs        56 White Sox       57 White Sox       58 White Sox       59 Cubs        60 Cubs

Social Networking Sites In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet regularly. Of the Internet users, 1054 use a social networking site.7 Find and interpret a 95% confidence interval for each of the following proportions: (a)   Proportion of US adults who use the Internet regularly. (b)   Proportion of US adult Internet users who use a social networking site. (c)   Proportion of all US adults who use a social networking site. Use the confidence interval to estimate whether it is plausible that 50% of all US adults use a social networking site.

The figure to the right shows the results of a survey in which 1018 adults from Country​ A, 1025 adults from Country​ B, 1005 adults from Country​ C, 999 adults from Country​ D, and 999 adults from Country E were asked whether national identity is strongly tied to birthplace. Construct a 95​% confidence interval for the population proportion of adults who say national identity is strongly tied to birthplace for each country listed. The 95​% confidence interval for the proportion of adults from Country A who say national identity is strongly tied to birthplace is (____),(____) The 95​% confidence interval for the proportion of adults from Country B who say national identity is strongly tied to birthplace is (____),(____) The 95​% confidence interval for the proportion of adults from Country C who say national identity is strongly tied to birthplace is (____),(____) The 95​% confidence interval for the proportion of adults from Country D who say national identity is strongly tied to…

Jane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying 22 students, she finds 5 who eat cauliflower. Obtain and interpret a 95​% confidence interval for the proportion of students who eat cauliflower on​ Jane's campus using Agresti and​ Coull's method.