For 15 points M 3. In a survey of 1530 adults from Lubumbashi, only 741 say that the will vote for the Mayor in this upcoming election. a. Find the point estimate for the population proportion b. Construct a 86% confidence interval for the population proportion 2 Lable C. Interpret the result in term of possible result of the upcoming election. For 15 points in Construct the 98 % confidence interval of the mean salary of all Math professors in Lubumbashi. A simple l = 63> >random sample of 24 such salary was collected and found to have a mean equal to $63555 with sample standard * = 29 deviation of $2955. Assume that the distribution of salary of math professors is normal. n = 24 a. Solution for confidence interval b. Interpret your result here (Use a complete sentence) C. What will happen to the margin of error and the confidence interval if the sample size was increased