QUESTION 37 Round your answer to two digits after the decimal sign To estimate the mean time that the instructors spend helping students outside the classroom each week during a teaching session, a simple random sample of 40 instructors is taken. The time spent helping students outside the classroom for these 40 instructors was measured and the mean time for this sample was 567 minutes and standard deviation 129 minutes. Use the t-interval procedure to find the margin of error at a 95% confidence level