the Consumer Reports National Research Center conducted atelephone survey of 2,000 adults to learn about the major economicconcerns for the future. The survey results showed that 1,700 ofthe respondents think the future health of Social Security is amajor economic concern. If computing the confidence intervalsmanually, make sure to use at least three decimal digits for thecritical values.
a. What is the point estimate of the population proportion ofadults who think the future health of Social Security is a majoreconomic concern?
b. At 90% confidence, what is the margin of error (to 4decimals)?
c. Develop a 90% confidence interval for the populationproportion of adults who think the future health of Social Securityis a major economic concern (to 3 decimals).
d. Develop a 95% confidence interval for this populationproportion (to 3 decimals).
