3. A study was conducted to investigate where people get their news. The study included 1000 people in the age group 18-29 and 1500 people in the age group 30-55. The sample proportions of people...

Extracted text: 3. A study was conducted to investigate where people get their news. The study included 1000 people in the age group 18-29 and 1500 people in the age group 30-55. The sample proportions of people whose main source of news is newspapers is 0.18 and 0.25 for the age groups 18-29 and 30-55, respectively. A. Find the 95% confidence interval for the difference in the proportion of people whose main source of news is newspapers for the two age groups and interpret it. В. is higher in the age group 30-55? Use the p-value method. At a=0.10, can it be concluded that the proportion of those whose source of news is newspaper