In a survey of 1002 people, 70% said they voted in a recent presidential election. Answer the following questions by hand. a) 1002 people, how many of them said that they voted? b) Use formula to construct a 82% confidence interval estimate of the proportion of the people who say that they voted. c) Use Brock calculator to construct a 97% confidence interval estimate of the proportion of the people who say that they voted. d) As the level of confidence increases what happens to the width of the confidence interval?