Q3. A 1-in-125 systematic sample of the 1000 students from a college is taken to estimate the average amount of money they spent on clothing per year. The sample data is given in the Table below. Student 12345678 Amount of money spent 28 30 50 25 18 35 42 26 (a) [5 pts] Estimate the average amount of money spent by the students on clothing per year with 97% confidence interval. (b) [4 pts] What sample size is needed to estimate the total amount of money spent by the students of the college with a bound on the error of estimation equal to 4500?