Q2a. A poll of 222 New Zealanders find that 50 are concerned about a particular policy. Construct the 95 per cent confidence interval for the proportion of all New Zealanders that are concerned. Provide an interpretation of the confidence interval.

Q2b. The government promised a review of the policy if 25 percent of the New Zealand population were concerned about the policy . Based on your analysis of the poll above, would you recommend the government conduct this review?