Please answer questions a) to e).

A recent survey at San Jose State University found that 21 among a random sample of 58 college students reported using vaping products on a regular basis. 6 A. Establish a 95% Confidence Interval for the expected proportion of users of vaping products among college students in the entire state of California. a) The \"plus four\" estimate for the proportion of students who use vaping products is [Report your answer to 3 decimal places]: (5 points) b) What is the Standard Error [Report your answer to 3 decimal places]? (5 points) ) What is the Margin of Error [Report your answer to 3 decimal places]? (5 points) d) The 95%Confidence Interval for p ranges from [Report your final answer to 2 decimal places]: (5 points) e) What should the sample size be if you wanted the Margin of Error to be 2%? (5 points)