1 An economist sampled 2100 individuals and found that 652 actively participate in the stock market. a. (2pts) Find the sample proportion. (Round your answer to 4 decimal points) Sample proportion: [ 3105 b. (2pts) True or false, the sample proportion is approximately normally distributed, O True False c. (6pts) Compute a 90% confidence interval for the population proportion p. (Round your answers to 4 decimal points) to d. (2pts) Report the margin of error for this confidence level. (Round your answer to 4 decimal points) 1661