A telephone survey of 1031 randomly selected adults was taken shortly after the United States began bombing Iraq and 842 voiced their support for this action. Find a 98% confidence interval for the proportion of the adult U.S. population supported the decision to go to war.

1. Procedure: Select an answer One mean Z procedure One variance χ² procedure One mean T procedure One proportion Z procedure
2. Assumptions: (select everything that applies)
   • The number of positive and negative responses are both greater than 10
   • Population standard deviation is known
   • Normal population
   • Simple random sample
   • Sample size is greater than 30
   • Population standard deviation is unknown
3. Unknown parameter: Select an answer μ, population mean p, population proportion σ², population variance