*URGENT*

Q1. A survey conducted in the U.S. by the Centre for Disease Control (CDC) with 2253 American adults in 2009 revealed that 1262 of these respondents had taken morphine for pain relief at some point in their life. a) Calculate and interpret a 95% confidence interval for the proportion of adults who at the time of the survey had taken morphine for pain relief. (2) b) If the error margin is set at 0.05, at a 95% confidence interval, what sample size is required irrespective of the sample results? (1)