In 2020, a poll of 118 adults revealed that 86 respondents thought that "the media is to blame for political division" in the US. Find a 91% confidence interval for the proportion of Americans that believe that 'the media is to blame for political division'.

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