Use the Descriptives command to calculate means and standard deviations for papres80, age, and income06. Use the output to formulate confidence interval estimates for the population values. Express the confidence intervals in words, as if you were reporting results in a newspaper story. (NOTE: Your estimate based on age will not reflect the total American population. The GSS sample is restricted to people age 18 and older, and the mean of the sample is much higher than the mean of the population as a whole.)