Exercise 4 Daily morning newspaper ran a poll on the 12th of April where people were asked: " What political party would you vote for if the elections would be today?" 800 people were interviewed but...

Extracted text: Exercise 4 Daily morning newspaper ran a poll on the 12th of April where people were asked: " What political party would you vote for if the elections would be today?" 800 people were interviewed but only 54 %, ie 432 people answered the questions. Of the 432 that answered, 185 said they would vote for Sjálfstæðisflokkurinn. a) Find a 95 % confidence interval for the proportion of those who are going to vote for Sjálfstæðisflokkurinn in the upcoming election. Only use people that answered the question in your calculations. b) Discuss possible shortcomings of the survey.