Suppose a study conducted on where people turn for news was based on 400 respondents who were between the ages of 36 and 50, and 400 respondents who were above age 50. Of the 400 respondents who were...

Suppose a study conducted on where people turn for news was based on 400 respondents who were between the ages of 36 and 50, and 400 respondents who were above age 50. Of the 400 respondents who were between the ages of 36 and 50, 199 got their news primarily from newspapers. Of the 400 respondents who were above age 50, 225 got their news primarily from newspapers.

a. Is there evidence of a significant difference in the proportion of people who get their news primarily from newspapers between those respondents who are between 36 and 50 years old, and those above 50 years? (Use a = 0.01.)

b. Determine the p-value in (a).

c. Construct a 99% confidence interval estimate of the difference between the population proportion of respondents who get their news primarily from newspapers between those respondents between 36 and 50 years and those above 50 years.